Index: branches/5.2.x/core/kernel/session/session_storage.php
===================================================================
diff -u -N -r14714 -r14735
--- branches/5.2.x/core/kernel/session/session_storage.php	(.../session_storage.php)	(revision 14714)
+++ branches/5.2.x/core/kernel/session/session_storage.php	(.../session_storage.php)	(revision 14735)
@@ -1,7 +1,7 @@
 <?php
 
 /**
-* @version	$Id: session_storage.php 14714 2011-11-01 10:05:18Z alex $
+* @version	$Id: session_storage.php 14735 2011-11-07 09:48:06Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -135,7 +135,7 @@
 		}
 
 		// ensure user groups are stored in a way, that kPermissionsHelper::CheckUserPermission can understand
-		$this->Session->StoreVar('UserGroups', $this->GetField('GroupList'), true); // true for optional
+		$this->Session->StoreVar('UserGroups', $this->GetField('GroupList'), !$to_database);
 	}
 
 	function DeleteSession()