Index: branches/RC/core/kernel/session/session.php
===================================================================
diff -u -N -r11386 -r11428
--- branches/RC/core/kernel/session/session.php	(.../session.php)	(revision 11386)
+++ branches/RC/core/kernel/session/session.php	(.../session.php)	(revision 11428)
@@ -398,6 +398,8 @@
 
 	var $SID;
 
+	var $CachedSID;
+
 	var $SessionSet = false;
 
 	/**
@@ -641,7 +643,9 @@
 			//If session has expired
 			if ($this->Expiration < adodb_mktime()) {
 				$this->Destroy();
-				return false;
+
+				// when Destory methods calls SetSession inside and new session get created
+				return $this->SessionSet;
 			}
 
 			//Otherwise it's ok
@@ -734,7 +738,7 @@
 	 */
 	function setSID($new_sid)
 	{
-		$this->SID=$new_sid;
+		$this->SID = $this->CachedSID = $new_sid;
 		$this->Application->SetVar($this->GETName,$new_sid);
 	}
 
@@ -853,8 +857,11 @@
 	{
 		$this->Storage->DeleteSession($this);
 		$this->Data = new Params();
-		$this->SID = '';
+		$this->SID = $this->CachedSID = '';
+		$this->SessionSet = false;
+
 		if ($this->CookiesEnabled) $this->SetSessionCookie(); //will remove the cookie due to value (sid) is empty
+
 		$this->SetSession(true); //will create a new session, true to force
 	}