Index: trunk/core/kernel/session/session.php
===================================================================
diff -u -r2680 -r2681
--- trunk/core/kernel/session/session.php	(.../session.php)	(revision 2680)
+++ trunk/core/kernel/session/session.php	(.../session.php)	(revision 2681)
@@ -247,6 +247,7 @@
 	{
 		$this->Mode = $mode;
 		$this->CachedNeedQueryString = null;
+		$this->CachedSID = null;
 	}
 
 	function SetCookiePath($path)