Session_OnEnd problem

Hi ppl,

Has anyone come across the problems pertaining to Session_OnEnd? I know that Session_OnEnd is gets called only if sessions time out. However, in my case Session_OnEnd does not get called everytime sessions time out. Consider the following situation.

User is logged in my web application and suddenly he goes for lunch and forget to log out from my application. My Session Time out is set to 10 minutes. What I am looking here is that whenever this condition exists, after 10 minutes my application should time out and call session_onEnd. In Session_onEnd i am updating some fields in the database to ensure that those fields are updated after session times out. But I do not see those fields updated at all even after 1 hour.

Can anyone help me know tthe probable cause for this problem and how do i sort it out?

Thanks in advance,
Vikram