Index: trunk/core/kernel/session/session.php
===================================================================
diff -u -r3137 -r3156
--- trunk/core/kernel/session/session.php	(.../session.php)	(revision 3137)
+++ trunk/core/kernel/session/session.php	(.../session.php)	(revision 3156)
@@ -327,7 +327,7 @@
 		if ( !$this->Application->ConfigValue('SessionReferrerCheck') ) {
 			return true;
 		}
-		$path = preg_replace("/admin$/", '', $this->CookiePath); // removing /admin for compatability with in-portal (in-link/admin/add_link.php)
+		$path = preg_replace('/admin[\/]{0,1}$/', '', $this->CookiePath); // removing /admin for compatability with in-portal (in-link/admin/add_link.php)
 		$reg = '#^'.preg_quote(PROTOCOL.ltrim($this->CookieDomain, '.').$path).'#';
 		return preg_match($reg, getArrayValue($_SERVER, 'HTTP_REFERER') ) || (defined('IS_POPUP') && IS_POPUP);
 	}