diff --git a/lam/lib/account.inc b/lam/lib/account.inc
index f2fdf9dd..b60f127a 100644
--- a/lam/lib/account.inc
+++ b/lam/lib/account.inc
@@ -286,8 +286,10 @@ function checkglobal($values, $type, $values_old=false) { // This functions chec
 		}
 	// Check if UID is valid. If none value was entered, the next useable value will be inserted
 	$return->general_uidNumber = checkid($values, $type, $values_old);
-	if (is_string($return->general_uidNumber)) // true if checkid has returned an error
+	if (is_string($return->general_uidNumber)) { // true if checkid has returned an error
 		$errors[] = array('ERROR', _('ID-Number'), $return->general_uidNumber);
+		unset($return->general_uidNumber);
+		}
 	// Check if Name-length is OK. minLength=3, maxLength=20
 	if ( !ereg('.{3,20}', $values->general_username)) $errors[] = array('ERROR', _('Name'), _('Name must content between 3 and 20 characters.'));
 	// Check if Name starts with letter
@@ -580,7 +582,7 @@ function getgid($groupname) { // Will return the the gid to an existing Groupnam
 	$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 	while ($entry) {
 		$attr = ldap_get_attributes($_SESSION['ldap']->server(), $entry);
-		if (($attr['gidNumber'][0]) && ($attr['cn'][0]==$groupname)) return $attr['gidNumber'][0];
+		if ((isset($attr['gidNumber'][0])) && ($attr['cn'][0]==$groupname)) return $attr['gidNumber'][0];
 		$entry = ldap_next_entry($_SESSION['ldap']->server(), $entry);
 		}
 	return -1;
@@ -672,14 +674,14 @@ function loaduser($dn) { // Will load all needed values from an existing account
 	$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 	$return->general_dn = ldap_get_dn($_SESSION['ldap']->server(), $entry);
 	$attr = ldap_get_attributes($_SESSION['ldap']->server(), $entry);
-	if ($attr['uid'][0]) $return->general_username = $attr['uid'][0];
-	if ($attr['uidNumber'][0]) $return->general_uidNumber = $attr['uidNumber'][0];
-	if ($attr['homeDirectory'][0]) $return->general_homedir = $attr['homeDirectory'][0];
-	if ($attr['shadowLastChange'][0]) $return->unix_shadowLastChange = $attr['shadowLastChange'][0];
-	if ($attr['loginShell'][0]) $return->general_shell = $attr['loginShell'][0];
-	if ($attr['gecos'][0]) $return->general_gecos = $attr['gecos'][0];
-	if ($attr['description'][0]) $return->general_gecos = $attr['description'][0];
-	if ($attr['gidNumber'][0]) {
+	if (isset($attr['uid'][0])) $return->general_username = $attr['uid'][0];
+	if (isset($attr['uidNumber'][0])) $return->general_uidNumber = $attr['uidNumber'][0];
+	if (isset($attr['homeDirectory'][0])) $return->general_homedir = $attr['homeDirectory'][0];
+	if (isset($attr['shadowLastChange'][0])) $return->unix_shadowLastChange = $attr['shadowLastChange'][0];
+	if (isset($attr['loginShell'][0])) $return->general_shell = $attr['loginShell'][0];
+	if (isset($attr['gecos'][0])) $return->general_gecos = $attr['gecos'][0];
+	if (isset($attr['description'][0])) $return->general_gecos = $attr['description'][0];
+	if (isset($attr['gidNumber'][0])) {
 		$result = ldap_search($_SESSION['ldap']->server(), $_SESSION['config']->get_GroupSuffix(), "objectclass=PosixGroup", array('gidNumber', 'cn'));
 		$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 		while ($entry) {
@@ -696,56 +698,57 @@ function loaduser($dn) { // Will load all needed values from an existing account
 			if (($id==$return->general_username) && ($attr2['cn'][0]!=$return->general_group)) $return->general_groupadd[]=$attr2['cn'][0];
 		$entry = ldap_next_entry($_SESSION['ldap']->server(), $entry);
 		}
-	if ($attr['shadowMin'][0]) $return->unix_pwdminage = $attr['shadowMin'][0];
-	if ($attr['shadowMax'][0]) $return->unix_pwdmaxage = $attr['shadowMax'][0];
-	if ($attr['shadowWarning'][0]) $return->unix_pwdwarn = $attr['shadowWarning'][0];
-	if ($attr['shadowInactive'][0]) $return->unix_pwdallowlogin = $attr['shadowInactive'][0];
-	if ($attr['shadowExpire'][0]) $return->unix_pwdexpire = $attr['shadowExpire'][0]*86400;
+	if (isset($attr['shadowMin'][0])) $return->unix_pwdminage = $attr['shadowMin'][0];
+	if (isset($attr['shadowMax'][0])) $return->unix_pwdmaxage = $attr['shadowMax'][0];
+	if (isset($attr['shadowWarning'][0])) $return->unix_pwdwarn = $attr['shadowWarning'][0];
+	if (isset($attr['shadowInactive'][0])) $return->unix_pwdallowlogin = $attr['shadowInactive'][0];
+	if (isset($attr['shadowExpire'][0])) $return->unix_pwdexpire = $attr['shadowExpire'][0]*86400;
 	if ($_SESSION['config']->samba3 == 'yes') {
-		if ($attr['sambaAcctFlags'][0]) {
+		if (isset($attr['sambaAcctFlags'][0])) {
 			if (strrpos($attr['sambaAcctFlags'][0], 'W')) $return->smb_flagsW=true;
 			if (strrpos($attr['sambaAcctFlags'][0], 'D')) $return->smb_flagsD=true;
 			if (strrpos($attr['sambaAcctFlags'][0], 'X')) $return->smb_flagsX=true;
 			}
-		if ($attr['sambaPwdCanChange'][0]) $return->smb_pwdcanchange = $attr['sambaPwdCanChange'][0];
-		if ($attr['sambaPwdMustChange'][0]) $return->smb_pwdmustchange = $attr['sambaPwdMustChange'][0];
-		if ($attr['sambaHomePath'][0]) $return->smb_smbhome = $attr['sambaHomePath'][0];
-		if ($attr['sambaHomeDrive'][0]) $return->smb_homedrive = $attr['sambaHomeDrive'][0];
-		if ($attr['sambaLogonScript'][0])  $return->smb_scriptPath = $attr['sambaLogonScript'][0];
-		if ($attr['sambaProfilePath'][0]) $return->smb_profilePath = $attr['sambaProfilePath'][0];
-		if ($attr['sambaUserWorkstations'][0]) $return->smb_smbuserworkstations = $attr['sambaUserWorkstations'][0];
-		if ($attr['sambaDomainName'][0]) $return->smb_domain = $attr['sambaDomainName'][0];
+		if (isset($attr['sambaPwdCanChange'][0])) $return->smb_pwdcanchange = $attr['sambaPwdCanChange'][0];
+		if (isset($attr['sambaPwdMustChange'][0])) $return->smb_pwdmustchange = $attr['sambaPwdMustChange'][0];
+		if (isset($attr['sambaHomePath'][0])) $return->smb_smbhome = $attr['sambaHomePath'][0];
+		if (isset($attr['sambaHomeDrive'][0])) $return->smb_homedrive = $attr['sambaHomeDrive'][0];
+		if (isset($attr['sambaLogonScript'][0]))  $return->smb_scriptPath = $attr['sambaLogonScript'][0];
+		if (isset($attr['sambaProfilePath'][0])) $return->smb_profilePath = $attr['sambaProfilePath'][0];
+		if (isset($attr['sambaUserWorkstations'][0])) $return->smb_smbuserworkstations = $attr['sambaUserWorkstations'][0];
+		if (isset($attr['sambaDomainName'][0])) $return->smb_domain = $attr['sambaDomainName'][0];
+		if (isset($attr['sambaNTPassword'][0]))  $return->smb_password = $attr['sambaNTPassword'][0];
 		}
 		else {
-			if ($attr['acctFlags'][0]) {
+			if (isset($attr['acctFlags'][0])) {
 				if (strrpos($attr['acctFlags'][0], 'W')) $return->smb_flagsW=true;
 				if (strrpos($attr['acctFlags'][0], 'D')) $return->smb_flagsD=true;
 				if (strrpos($attr['acctFlags'][0], 'X')) $return->smb_flagsX=true;
 				}
-			if ($attr['smbHome'][0]) $return->smb_smbhome = $attr['smbHome'][0];
-			if ($attr['pwdCanChange'][0]) $return->smb_pwdcanchange = $attr['pwdCanChange'][0];
-			if ($attr['pwdMustChange'][0]) $return->smb_pwdmustchange = $attr['pwdMustChange'][0];
-			if ($attr['homeDrive'][0]) $return->smb_homedrive = $attr['homeDrive'][0];
-			if ($attr['scriptPath'][0])  $return->smb_scriptPath = $attr['scriptPath'][0];
-			if ($attr['profilePath'][0]) $return->smb_profilePath = $attr['profilePath'][0];
-			if ($attr['userWorkstations'][0]) $return->smb_smbuserworkstations = $attr['userWorkstations'][0];
-			if ($attr['domain'][0]) $return->smb_domain = $attr['domain'][0];
+			if (isset($attr['ntPassword'][0]))  $return->smb_password = $attr['ntPassword'][0];
+			if (isset($attr['smbHome'][0])) $return->smb_smbhome = $attr['smbHome'][0];
+			if (isset($attr['pwdCanChange'][0])) $return->smb_pwdcanchange = $attr['pwdCanChange'][0];
+			if (isset($attr['pwdMustChange'][0])) $return->smb_pwdmustchange = $attr['pwdMustChange'][0];
+			if (isset($attr['homeDrive'][0])) $return->smb_homedrive = $attr['homeDrive'][0];
+			if (isset($attr['scriptPath'][0]))  $return->smb_scriptPath = $attr['scriptPath'][0];
+			if (isset($attr['profilePath'][0])) $return->smb_profilePath = $attr['profilePath'][0];
+			if (isset($attr['userWorkstations'][0])) $return->smb_smbuserworkstations = $attr['userWorkstations'][0];
+			if (isset($attr['domain'][0])) $return->smb_domain = $attr['domain'][0];
 			}
-	if ($attr['givenName'][0]) $return->general_givenname = $attr['givenName'][0];
-	if ($attr['sn'][0]) $return->general_surname = $attr['sn'][0];
-	if ($attr['title'][0]) $return->personal_title = $attr['title'][0];
-	if ($attr['mail'][0]) $return->personal_mail = $attr['mail'][0];
-	if ($attr['telephoneNumber'][0]) $return->personal_telephoneNumber = $attr['telephoneNumber'][0];
-	if ($attr['mobilemobileTelephoneNumber'][0]) $return->personal_mobileTelephoneNumber = $attr['mobilemobileTelephoneNumber'][0];
-		else 	if ($attr['mobile'][0]) $return->personal_mobileTelephoneNumber = $attr['mobile'][0];
-	if ($attr['facsimileTelephoneNumber'][0]) $return->personal_facsimileTelephoneNumber = $attr['facsimileTelephoneNumber'][0];
-	if ($attr['street'][0]) $return->personal_street = $attr['street'][0];
-	if ($attr['postalCode'][0]) $return->personal_postalCode = $attr['postalCode'][0];
-	if ($attr['postalAddress'][0]) $return->personal_postalAddress = $attr['postalAddress'][0];
-	if ($attr['employeeType'][0]) $return->personal_employeeType = $attr['employeeType'][0];
+	if (isset($attr['givenName'][0])) $return->general_givenname = $attr['givenName'][0];
+	if (isset($attr['sn'][0])) $return->general_surname = $attr['sn'][0];
+	if (isset($attr['title'][0])) $return->personal_title = $attr['title'][0];
+	if (isset($attr['mail'][0])) $return->personal_mail = $attr['mail'][0];
+	if (isset($attr['telephoneNumber'][0])) $return->personal_telephoneNumber = $attr['telephoneNumber'][0];
+	if (isset($attr['mobilemobileTelephoneNumber'][0])) $return->personal_mobileTelephoneNumber = $attr['mobilemobileTelephoneNumber'][0];
+		else 	if (isset($attr['mobile'][0])) $return->personal_mobileTelephoneNumber = $attr['mobile'][0];
+	if (isset($attr['facsimileTelephoneNumber'][0])) $return->personal_facsimileTelephoneNumber = $attr['facsimileTelephoneNumber'][0];
+	if (isset($attr['street'][0])) $return->personal_street = $attr['street'][0];
+	if (isset($attr['postalCode'][0])) $return->personal_postalCode = $attr['postalCode'][0];
+	if (isset($attr['postalAddress'][0])) $return->personal_postalAddress = $attr['postalAddress'][0];
+	if (isset($attr['employeeType'][0])) $return->personal_employeeType = $attr['employeeType'][0];
 	if (substr(str_replace('{CRYPT}', '',$attr['userPassword'][0]),0,1) == '!' ) $return->unix_deactivated=true;
-	if ($attr['userPassword'][0]) $return->unix_password = $attr['userPassword'][0];
-	if ($attr['ntPassword'][0])  $return->smb_password = $attr['ntPassword'][0];
+	if (isset($attr['userPassword'][0])) $return->unix_password = $attr['userPassword'][0];
 	if ($_SESSION['config']->scriptServer) {
 		$values = getquotas('user',$return->general_username);
 		if (is_object($values)) {
@@ -762,12 +765,12 @@ function loadhost($dn) { // Will load all needed values from an existing account
 	$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 	$return->general_dn = (ldap_get_dn($_SESSION['ldap']->server(), $entry));
 	$attr = ldap_get_attributes($_SESSION['ldap']->server(), $entry);
-	if ($attr['uid'][0]) $return->general_username = $attr['uid'][0];
-	if ($attr['uidNumber'][0]) $return->general_uidNumber = $attr['uidNumber'][0];
-	if ($attr['shadowLastChange'][0]) $return->unix_shadowLastChange = $attr['shadowLastChange'][0];
-	if ($attr['gecos'][0]) $return->general_gecos = $attr['gecos'][0];
-	if ($attr['description'][0]) $return->general_gecos = $attr['description'][0];
-	if ($attr['gidNumber'][0]) {
+	if (isset($attr['uid'][0])) $return->general_username = $attr['uid'][0];
+	if (isset($attr['uidNumber'][0])) $return->general_uidNumber = $attr['uidNumber'][0];
+	if (isset($attr['shadowLastChange'][0])) $return->unix_shadowLastChange = $attr['shadowLastChange'][0];
+	if (isset($attr['gecos'][0])) $return->general_gecos = $attr['gecos'][0];
+	if (isset($attr['description'][0])) $return->general_gecos = $attr['description'][0];
+	if (isset($attr['gidNumber'][0])) {
 		$result = ldap_search($_SESSION['ldap']->server(), $_SESSION['config']->get_GroupSuffix(), "objectclass=PosixGroup", array('gidNumber', 'cn'));
 		$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 		while ($entry) {
@@ -784,33 +787,33 @@ function loadhost($dn) { // Will load all needed values from an existing account
 			if (($id==$return->general_username) && ($attr2['cn'][0]!=$return->general_group)) $return->general_groupadd[]=$attr2['cn'][0];
 		$entry = ldap_next_entry($_SESSION['ldap']->server(), $entry);
 		}
-	if ($attr['shadowMin'][0]) $return->unix_pwdminage = $attr['shadowMin'][0];
-	if ($attr['shadowMax'][0]) $return->unix_pwdmaxage = $attr['shadowMax'][0];
-	if ($attr['shadowWarning'][0]) $return->unix_pwdwarn = $attr['shadowWarning'][0];
-	if ($attr['shadowInactive'][0]) $return->unix_pwdallowlogin = $attr['shadowInactive'][0];
-	if ($attr['shadowExpire'][0]) $return->unix_pwdexpire = $attr['shadowExpire'][0]*86400;
+	if (isset($attr['shadowMin'][0])) $return->unix_pwdminage = $attr['shadowMin'][0];
+	if (isset($attr['shadowMax'][0])) $return->unix_pwdmaxage = $attr['shadowMax'][0];
+	if (isset($attr['shadowWarning'][0])) $return->unix_pwdwarn = $attr['shadowWarning'][0];
+	if (isset($attr['shadowInactive'][0])) $return->unix_pwdallowlogin = $attr['shadowInactive'][0];
+	if (isset($attr['shadowExpire'][0])) $return->unix_pwdexpire = $attr['shadowExpire'][0]*86400;
 	if ($_SESSION['config']->samba3 == 'yes') {
-		if ($attr['sambaAcctFlags'][0]) {
+		if (isset($attr['sambaAcctFlags'][0])) {
 			if (strrpos($attr['sambaAcctFlags'][0], 'W')) $return->smb_flagsW=true;
 			if (strrpos($attr['sambaAcctFlags'][0], 'D')) $return->smb_flagsD=true;
 			if (strrpos($attr['sambaAcctFlags'][0], 'X')) $return->smb_flagsX=true;
 			}
-		if ($attr['sambaPwdCanChange'][0]) $return->smb_pwdcanchange = $attr['sambaPwdCanChange'][0];
-		if ($attr['sambaPwdMustChange'][0]) $return->smb_pwdmustchange = $attr['sambaPwdMustChange'][0];
-		if ($attr['sambaDomainName'][0]) $return->smb_domain = $attr['sambaDomainName'][0];
+		if (isset($attr['sambaPwdCanChange'][0])) $return->smb_pwdcanchange = $attr['sambaPwdCanChange'][0];
+		if (isset($attr['sambaPwdMustChange'][0])) $return->smb_pwdmustchange = $attr['sambaPwdMustChange'][0];
+		if (isset($attr['sambaDomainName'][0])) $return->smb_domain = $attr['sambaDomainName'][0];
 		}
 		else {
-			if ($attr['acctFlags'][0]) {
+			if (isset($attr['acctFlags'][0])) {
 				if (strrpos($attr['acctFlags'][0], 'W')) $return->smb_flagsW=true;
 				if (strrpos($attr['acctFlags'][0], 'D')) $return->smb_flagsD=true;
 				if (strrpos($attr['acctFlags'][0], 'X')) $return->smb_flagsX=true;
 				}
-			if ($attr['domain'][0]) $return->smb_domain = $attr['domain'][0];
-			if ($attr['pwdCanChange'][0]) $return->smb_pwdcanchange = $attr['pwdCanChange'][0];
-			if ($attr['pwdMustChange'][0]) $return->smb_pwdmustchange = $attr['pwdMustChange'][0];
+			if (isset($attr['domain'][0])) $return->smb_domain = $attr['domain'][0];
+			if (isset($attr['pwdCanChange'][0])) $return->smb_pwdcanchange = $attr['pwdCanChange'][0];
+			if (isset($attr['pwdMustChange'][0])) $return->smb_pwdmustchange = $attr['pwdMustChange'][0];
 			}
-	if ($attr['givenName'][0]) $return->general_givenname = $attr['givenName'][0];
-	if ($attr['sn'][0]) $return->general_surname = $attr['sn'][0];
+	if (isset($attr['givenName'][0])) $return->general_givenname = $attr['givenName'][0];
+	if (isset($attr['sn'][0])) $return->general_surname = $attr['sn'][0];
 	if (substr(str_replace('{CRYPT}', '',$attr['userPassword'][0]),0,1) == '!' ) $return->unix_deactivated=true;
 	return $return;
 	}
@@ -822,16 +825,16 @@ function loadgroup($dn) { // Will load all needed values from an existing group
 	$entry = ldap_first_entry($_SESSION['ldap']->server(), $result);
 	$return->general_dn = (ldap_get_dn($_SESSION['ldap']->server(), $entry));
 	$attr = ldap_get_attributes($_SESSION['ldap']->server(), $entry);
-	if ($attr['gidNumber'][0]) $return->general_uidNumber = $attr['gidNumber'][0];
-	if ($attr['description'][0]) $return->general_gecos = $attr['description'][0];
-	if ($attr['cn'][0]) {
+	if (isset($attr['gidNumber'][0])) $return->general_uidNumber = $attr['gidNumber'][0];
+	if (isset($attr['description'][0])) $return->general_gecos = $attr['description'][0];
+	if (isset($attr['cn'][0])) {
 		$return->general_username = $attr['cn'][0];
 		if ($_SESSION['config']->scriptServer) getquotas('group',$attr['cn'][0]);
 		}
-	if ($attr['memberUid']) $return->general_memberUid = $attr['memberUid'];
+	if (isset($attr['memberUid'])) $return->general_memberUid = $attr['memberUid'];
 	if (is_array($return->general_memberUid)) array_shift($return->general_memberUid);
-	if ($attr['sambaSID']) $return->smb_mapgroup = $attr['sambaSID'];
-	if ($attr['displayName']) $return->smb_displayName = $attr['displayName'];
+	if (isset($attr['sambaSID'])) $return->smb_mapgroup = $attr['sambaSID'];
+	if (isset($attr['displayName'])) $return->smb_displayName = $attr['displayName'];
 	if ($_SESSION['config']->scriptServer) {
 		$values = getquotas('group',$return->general_username);
 		if (is_object($values)) {
diff --git a/lam/templates/account.php b/lam/templates/account.php
index c8fbd40e..adca7ff2 100644
--- a/lam/templates/account.php
+++ b/lam/templates/account.php
@@ -45,21 +45,21 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 		// Write all general values into $_SESSION['account'] if no profile should be loaded
 		if (!$_POST['load']) {
 			$_SESSION['account']->general_dn = $_POST['f_general_suffix'];
-			if ($_POST['f_general_username']) $_SESSION['account']->general_username = $_POST['f_general_username'];
-				else $_SESSION['account']->general_username = $_POST['f_general_username'];
-			if ($_POST['f_general_surname']) $_SESSION['account']->general_surname = $_POST['f_general_surname'];
+			if (isset($_POST['f_general_username'])) $_SESSION['account']->general_username = $_POST['f_general_username'];
+				else $_SESSION['account']->general_username = '';
+			if (isset($_POST['f_general_surname'])) $_SESSION['account']->general_surname = $_POST['f_general_surname'];
 				else $_SESSION['account']->general_surname = "";
-			if ($_POST['f_general_givenname']) $_SESSION['account']->general_givenname = $_POST['f_general_givenname'];
+			if (isset($_POST['f_general_givenname'])) $_SESSION['account']->general_givenname = $_POST['f_general_givenname'];
 				else $_SESSION['account']->general_givenname = "";
-			if ($_POST['f_general_uidNumber']) $_SESSION['account']->general_uidNumber = $_POST['f_general_uidNumber'];
+			if (isset($_POST['f_general_uidNumber'])) $_SESSION['account']->general_uidNumber = $_POST['f_general_uidNumber'];
 				else $_SESSION['account']->general_uidNumber = "";
-			if ($_POST['f_general_group']) $_SESSION['account']->general_group = $_POST['f_general_group'];
-			if ($_POST['f_general_groupadd']) $_SESSION['account']->general_groupadd = $_POST['f_general_groupadd'];
+			if (isset($_POST['f_general_group'])) $_SESSION['account']->general_group = $_POST['f_general_group'];
+			if (isset($_POST['f_general_groupadd'])) $_SESSION['account']->general_groupadd = $_POST['f_general_groupadd'];
 				else $_SESSION['account']->general_groupadd = array('');
-			if ($_POST['f_general_homedir']) $_SESSION['account']->general_homedir = $_POST['f_general_homedir'];
+			if (isset($_POST['f_general_homedir'])) $_SESSION['account']->general_homedir = $_POST['f_general_homedir'];
 				else $_SESSION['account']->general_homedir = "";
-			if ($_POST['f_general_shell']) $_SESSION['account']->general_shell = $_POST['f_general_shell'];
-			if ($_POST['f_general_gecos']) $_SESSION['account']->general_gecos = $_POST['f_general_gecos'];
+			if (isset($_POST['f_general_shell'])) $_SESSION['account']->general_shell = $_POST['f_general_shell'];
+			if (isset($_POST['f_general_gecos'])) $_SESSION['account']->general_gecos = $_POST['f_general_gecos'];
 				else $_SESSION['account']->general_gecos = "";
 			// Check if values are OK and set automatic values.  if not error-variable will be set
 			if ($_SESSION['account_old']) list($values, $errors) = checkglobal($_SESSION['account'], $_SESSION['type2'], $_SESSION['account_old']); // account.inc
@@ -80,7 +80,7 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 		break;
 	case 'unix':
 		// Write all general values into $_SESSION['account']
-		if ($_POST['f_unix_password']) {
+		if (isset($_POST['f_unix_password'])) {
 			// Encraypt password
 			$iv = base64_decode($_COOKIE["IV"]);
 			$key = base64_decode($_COOKIE["Key"]);
@@ -89,18 +89,15 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 		 else $_SESSION['account']->unix_password = '';
 		if ($_POST['f_unix_password_no']) $_SESSION['account']->unix_password_no = true;
 			else $_SESSION['account']->unix_password_no = false;
-		if ($_POST['f_unix_pwdwarn']) $_SESSION['account']->unix_pwdwarn = $_POST['f_unix_pwdwarn'];
+		if (isset($_POST['f_unix_pwdwarn'])) $_SESSION['account']->unix_pwdwarn = $_POST['f_unix_pwdwarn'];
 			else $_SESSION['account']->unix_pwdwarn = '';
-		if ($_POST['f_unix_pwdallowlogin']) $_SESSION['account']->unix_pwdallowlogin = $_POST['f_unix_pwdallowlogin'];
+		if (isset($_POST['f_unix_pwdallowlogin'])) $_SESSION['account']->unix_pwdallowlogin = $_POST['f_unix_pwdallowlogin'];
 			else $_SESSION['account']->unix_pwdallowlogin = '';
-		if ($_POST['f_unix_pwdmaxage']) $_SESSION['account']->unix_pwdmaxage = $_POST['f_unix_pwdmaxage'];
+		if (isset($_POST['f_unix_pwdmaxage'])) $_SESSION['account']->unix_pwdmaxage = $_POST['f_unix_pwdmaxage'];
 			else $_SESSION['account']->unix_pwdmaxage = '';
-		if ($_POST['f_unix_pwdminage']) $_SESSION['account']->unix_pwdminage = $_POST['f_unix_pwdminage'];
+		if (isset($_POST['f_unix_pwdminage'])) $_SESSION['account']->unix_pwdminage = $_POST['f_unix_pwdminage'];
 			else $_SESSION['account']->unix_pwdminage = '';
-		//if ($_POST['f_unix_pwdexpire_day']) $_SESSION['account']->unix_pwdexpire_day = $_POST['f_unix_pwdexpire_day'];
-		//if ($_POST['f_unix_pwdexpire_mon']) $_SESSION['account']->unix_pwdexpire_mon = $_POST['f_unix_pwdexpire_mon'];
-		//if ($_POST['f_unix_pwdexpire_yea']) $_SESSION['account']->unix_pwdexpire_yea = $_POST['f_unix_pwdexpire_yea'];
-		if ($_POST['f_unix_pwdexpire_mon']) $_SESSION['account']->unix_pwdexpire = mktime(10, 0, 0, $_POST['f_unix_pwdexpire_mon'],
+		if (isset($_POST['f_unix_pwdexpire_mon'])) $_SESSION['account']->unix_pwdexpire = mktime(10, 0, 0, $_POST['f_unix_pwdexpire_mon'],
 			$_POST['f_unix_pwdexpire_day'], $_POST['f_unix_pwdexpire_yea']);
 		if ($_POST['f_unix_deactivated']) $_SESSION['account']->unix_deactivated = $_POST['f_unix_deactivated'];
 			else $_SESSION['account']->unix_deactivated = false;
@@ -143,16 +140,16 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 			else $_SESSION['account']->smb_password_no = false;
 		if ($_POST['f_smb_useunixpwd']) $_SESSION['account']->smb_useunixpwd = $_POST['f_smb_useunixpwd'];
 			else $_SESSION['account']->smb_useunixpwd = false;
-		if ($_POST['f_smb_homedrive']) $_SESSION['account']->smb_homedrive = $_POST['f_smb_homedrive'];
-		if ($_POST['f_smb_scriptpath']) $_SESSION['account']->smb_scriptPath = $_POST['f_smb_scriptpath'];
+		if (isset($_POST['f_smb_homedrive'])) $_SESSION['account']->smb_homedrive = $_POST['f_smb_homedrive'];
+		if (isset($_POST['f_smb_scriptpath'])) $_SESSION['account']->smb_scriptPath = $_POST['f_smb_scriptpath'];
 			else $_SESSION['account']->smb_scriptPath = '';
-		if ($_POST['f_smb_smbuserworkstations']) $_SESSION['account']->smb_smbuserworkstations = $_POST['f_smb_smbuserworkstations'];
+		if (isset($_POST['f_smb_smbuserworkstations'])) $_SESSION['account']->smb_smbuserworkstations = $_POST['f_smb_smbuserworkstations'];
 			else $_SESSION['account']->smb_smbuserworkstations = "";
-		if ($_POST['f_smb_smbhome']) $_SESSION['account']->smb_smbhome = stripslashes($_POST['f_smb_smbhome']);
+		if (isset($_POST['f_smb_smbhome'])) $_SESSION['account']->smb_smbhome = stripslashes($_POST['f_smb_smbhome']);
 			else $_SESSION['account']->smb_smbhome = "";
-		if ($_POST['f_smb_profilePath']) $_SESSION['account']->smb_profilePath = stripslashes($_POST['f_smb_profilePath']);
+		if (isset($_POST['f_smb_profilePath'])) $_SESSION['account']->smb_profilePath = stripslashes($_POST['f_smb_profilePath']);
 			else $_SESSION['account']->smb_profilePath = "";
-		if ($_POST['f_smb_domain']) $_SESSION['account']->smb_domain = $_POST['f_smb_domain'];
+		if (isset($_POST['f_smb_domain'])) $_SESSION['account']->smb_domain = $_POST['f_smb_domain'];
 			else $_SESSION['account']->smb_domain = false;
 		if ($_POST['f_smb_flagsW']) $_SESSION['account']->smb_flagsW = $_POST['f_smb_flagsW'];
 			else $_SESSION['account']->smb_flagsW = false;
@@ -163,7 +160,7 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 		if ($_POST['f_smb_mapgroup'] == _('Domain Guests')) $_SESSION['account']->smb_mapgroup = $_SESSION[config]->get_domainSID() . "-" . '514';
 		if ($_POST['f_smb_mapgroup'] == _('Domain Users')) $_SESSION['account']->smb_mapgroup = $_SESSION[config]->get_domainSID() . "-" . '513';
 		if ($_POST['f_smb_mapgroup'] == _('Domain Admins')) $_SESSION['account']->smb_mapgroup = $_SESSION[config]->get_domainSID() . "-" . '512';
-		if ($_POST['f_smb_domain']) $_SESSION['account']->smb_displayName = $_POST['f_smb_domain'];
+		if (isset($_POST['f_smb_domain'])) $_SESSION['account']->smb_displayName = $_POST['f_smb_domain'];
 			else $_SESSION['account']->smb_displayName = '';
 		// Check if values are OK and set automatic values. if not error-variable will be set
 		list($values, $errors) = checksamba($_SESSION['account'], $_SESSION['type2']); // account.inc
@@ -219,23 +216,23 @@ switch ($_POST['select']) { // Select which part of page should be loaded and ch
 		break;
 	case 'personal':
 		// Write all general values into $_SESSION['account']
-		if ($_POST['f_personal_title']) $_SESSION['account']->personal_title = $_POST['f_personal_title'];
+		if (isset($_POST['f_personal_title'])) $_SESSION['account']->personal_title = $_POST['f_personal_title'];
 			else $_SESSION['account']->personal_title = "";
-		if ($_POST['f_personal_mail']) $_SESSION['account']->personal_mail = $_POST['f_personal_mail'];
+		if (isset($_POST['f_personal_mail'])) $_SESSION['account']->personal_mail = $_POST['f_personal_mail'];
 			else $_SESSION['account']->personal_mail = "";
-		if ($_POST['f_personal_telephoneNumber']) $_SESSION['account']->personal_telephoneNumber = $_POST['f_personal_telephoneNumber'];
+		if (isset($_POST['f_personal_telephoneNumber'])) $_SESSION['account']->personal_telephoneNumber = $_POST['f_personal_telephoneNumber'];
 			else $_SESSION['account']->personal_telephoneNumber = "";
-		if ($_POST['f_personal_mobileTelephoneNumber']) $_SESSION['account']->personal_mobileTelephoneNumber = $_POST['f_personal_mobileTelephoneNumber'];
+		if (isset($_POST['f_personal_mobileTelephoneNumber'])) $_SESSION['account']->personal_mobileTelephoneNumber = $_POST['f_personal_mobileTelephoneNumber'];
 			else $_SESSION['account']->personal_mobileTelephoneNumber = "";
-		if ($_POST['f_personal_facsimileTelephoneNumber']) $_SESSION['account']->personal_facsimileTelephoneNumber = $_POST['f_personal_facsimileTelephoneNumber'];
+		if (isset($_POST['f_personal_facsimileTelephoneNumber'])) $_SESSION['account']->personal_facsimileTelephoneNumber = $_POST['f_personal_facsimileTelephoneNumber'];
 			else $_SESSION['account']->personal_facsimileTelephoneNumber = "";
-		if ($_POST['f_personal_street']) $_SESSION['account']->personal_street = $_POST['f_personal_street'];
+		if (isset($_POST['f_personal_street'])) $_SESSION['account']->personal_street = $_POST['f_personal_street'];
 			else $_SESSION['account']->personal_street = "";
-		if ($_POST['f_personal_postalCode']) $_SESSION['account']->personal_postalCode = $_POST['f_personal_postalCode'];
+		if (isset($_POST['f_personal_postalCode'])) $_SESSION['account']->personal_postalCode = $_POST['f_personal_postalCode'];
 			else $_SESSION['account']->personal_postalCode = "";
-		if ($_POST['f_personal_postalAddress']) $_SESSION['account']->personal_postalAddress = $_POST['f_personal_postalAddress'];
+		if (isset($_POST['f_personal_postalAddress'])) $_SESSION['account']->personal_postalAddress = $_POST['f_personal_postalAddress'];
 			else $_SESSION['account']->personal_postalAddress = "";
-		if ($_POST['f_personal_employeeType']) $_SESSION['account']->personal_employeeType = $_POST['f_personal_employeeType'];
+		if (isset($_POST['f_personal_employeeType'])) $_SESSION['account']->personal_employeeType = $_POST['f_personal_employeeType'];
 			else $_SESSION['account']->personal_employeeType = "";
 		// Check if values are OK and set automatic values. if not error-variable will be set
 		list($values, $errors) = checkpersonal($_SESSION['account'], $_SESSION['type2']); // account.inc