Your Windows hosted website includes an ASP Web application that uses the Session_OnEnd() event.   You find the  Session_OnEnd() event is not raised in ASP Web applications as expected. Therefore, you may experience slow computer performance or memory leaks, or the failure to execute desired code at the time of session end.

The following Microsoft article discusses this problem: http://support.microsoft.com/kb/934903   At the recommendation of Microsoft, 3Essentials has not applied this fix, because we have had no users who have reported it.  However, the condition for this problem does exist on our servers... if you believe you are being affected by this problem, please submit a support request identifying this KB article, and describe the symptoms you are facing.  Our support & engineering teams will review the issue, and will assess applying the fix at that time, if deemed necessary.