diff --git a/lam/config/config.php b/lam/config/config.php
index 7124935f..2b3fbe5c 100644
--- a/lam/config/config.php
+++ b/lam/config/config.php
@@ -67,7 +67,7 @@ class Config {
 			$file = fopen($conffile, "r");
 			while (!feof($file)) {
 				$line = fgets($file, 1024);
-				if (($line == "\n")||($line[0] == "#")) continue;
+				if (($line == "\n")||($line[0] == "#")) continue; // ignore comments
 				if (substr($line, 0, 5) == "ssl: ") {
 					$this->SSL = chop(substr($line, 5, strlen($line)-5));
 					continue;
@@ -122,7 +122,7 @@ class Config {
 			}
 			fclose($file);
 			for ($i = 0; $i < sizeof($file_array); $i++) {
-				if (($file_array[$i] == "\n")||($file_array[$i][0] == "#")) continue;
+				if (($file_array[$i] == "\n")||($file_array[$i][0] == "#")) continue; // ignore comments
 				if (substr($file_array[$i], 0, 5) == "ssl: ") {
 					$file_array[$i] = "ssl: " . $this->SSL . "\n";
 					$save_ssl = True;
@@ -176,7 +176,7 @@ class Config {
 				"# e.g. ou=People,dc=yourdomain,dc=org\n" . "usersuffix: " . $this->suff_users);
 			if (!$save_suffgrp == True) array_push($file_array, "\n# suffix of groups\n" . 
 				"# e.g. ou=Groups,dc=yourdomain,dc=org\n" . "groupsuffix: " . $this->suff_groups);
-			if (!$save_suffhst == True) array_push($file_array, "\n# suffix of hosts\n" . 
+			if (!$save_suffhst == True) array_push($file_array, "\n# suffix of Samba hosts\n" . 
 				"# e.g. ou=machines,dc=yourdomain,dc=org\n" . "hostsuffix: " . $this->suff_hosts);
 			$file = fopen($conffile, "w");
 			for ($i = 0; $i < sizeof($file_array); $i++) fputs($file, $file_array[$i]);
@@ -194,6 +194,8 @@ class Config {
 		echo _("<b>GroupSuffix: </b>") . $this->suff_groups . "</br>";
 		echo _("<b>HostSuffix: </b>") . $this->suff_hosts;
 	}
+
+// functions to read/write preferences
 	
 	function get_SSL() {
 		return $this->SSL;
@@ -227,7 +229,7 @@ class Config {
 	}
 	
 	function set_Admins($value) {
-		if (is_array($value)) {
+		if (is_array($value)) { // check if $value is array of strings
 			$b = true;
 			for($i = 0; $i < sizeof($value); $i++){
 				if (is_string($value[$i]) == false) {
@@ -237,6 +239,7 @@ class Config {
 			}
 			if ($b) $this->Admins = $value;
 		}
+		else echo _("Config->set_Admins failed!");
 	}
 	
 	function get_Adminstring() {
diff --git a/lam/config/confmain.php b/lam/config/confmain.php
index 73eef583..795c4796 100644
--- a/lam/config/confmain.php
+++ b/lam/config/confmain.php
@@ -25,12 +25,14 @@ $Id$
 */
 
 // check if password was entered
+// if not: load login page
 if (! $passwd) {
 	require('conflogin.php');
 	exit;
 }
 
 // check if password is valid
+// if not: load login page
 include_once ('config.php');
 $conf = new Config();
 if (!(($conf->get_Passwd()) == $passwd)) {
diff --git a/lam/config/confsave.php b/lam/config/confsave.php
index 38f6869e..8ce0f997 100644
--- a/lam/config/confsave.php
+++ b/lam/config/confsave.php
@@ -20,7 +20,7 @@ $Id$
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
   
-  
+  confsave saves the new preferences to lam.conf
   
 */
 
@@ -28,8 +28,9 @@ include_once ('config.php');
 $conf = new Config();
 
 // check if password is correct 
+// if not: load login page
 if ($passwd != $conf->get_Passwd()) {
-	require('confmain.php');
+	require('conflogin.php');
 	exit;
 }
 
@@ -73,13 +74,14 @@ if ($pass1 != $pass2) {
 	echo _("<b>" . _("Passwords are different!") . "</b>");
 	exit;
 }
+// set new password
 if ($pass1 != "") {
 	$conf->set_Passwd($pass1);
 	echo ("<b>" . _("Password changed!") . "</b><br><br>");
 }
-// save settings
+// save settings and display new settings
 $conf->save();
 echo ("<b>" . _("Saving the following settings:") . "</b><br><br>");
 $conf->printconf();
 
-?>
\ No newline at end of file
+?>
diff --git a/lam/lam.conf b/lam/lam.conf
index 02cf3fd6..24ea4dfe 100644
--- a/lam/lam.conf
+++ b/lam/lam.conf
@@ -25,6 +25,6 @@ usersuffix: ou=People,o=test,c=de
 # e.g. ou=Groups,dc=yourdomain,dc=org
 groupsuffix: ou=group,o=test,c=de
 
-# suffix of hosts
+# suffix of Samba hosts
 # e.g. ou=machines,dc=yourdomain,dc=org
 hostsuffix: ou=machines,o=test,c=de
diff --git a/lam/lib/ldap.php b/lam/lib/ldap.php
index 3232e844..55b72454 100644
--- a/lam/lib/ldap.php
+++ b/lam/lib/ldap.php
@@ -21,7 +21,7 @@ $Id$
 
 */
 
-// Ldap provides basic functions to connect to the OpenLDAP server and get lists of users and groups.
+// ldap.php provides basic functions to connect to the OpenLDAP server and get lists of users and groups.
 include_once("../config/config.php");
 
 class Ldap{
@@ -99,7 +99,6 @@ class Ldap{
 	}
 	
 	// closes connection to server
-	// $base is optional and specifies the root from where to search for entries
 	function close() {
 		ldap_close($this->server);
 	}