Index: branches/5.2.x/core/units/helpers/user_helper.php
===================================================================
diff -u -N -r15777 -r16005
--- branches/5.2.x/core/units/helpers/user_helper.php	(.../user_helper.php)	(revision 15777)
+++ branches/5.2.x/core/units/helpers/user_helper.php	(.../user_helper.php)	(revision 16005)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: user_helper.php 15777 2013-05-23 17:51:28Z alex $
+* @version	$Id: user_helper.php 16005 2014-01-03 11:45:16Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -160,10 +160,15 @@
 		function loginUserById($user_id, $remember_login_cookie = false)
 		{
 			$object =& $this->getUserObject();
-			$this->Application->removeObject($object->getPrefixSpecial());
 
-			$this->Application->StoreVar('user_id', $user_id);
 			$this->Application->SetVar('u.current_id', $user_id);
+
+			if ( !$this->Application->isAdmin ) {
+				// needed for "profile edit", "registration" forms ON FRONT ONLY
+				$this->Application->SetVar('u_id', $user_id);
+			}
+
+			$this->Application->StoreVar('user_id', $user_id);
 			$this->Application->Session->SetField('PortalUserId', $user_id);
 
 			if ($user_id != USER_ROOT) {