ASP Web App Timing Out Erratically

I am going to be working on an ASP web application for a client. They are having problems开发者_高级运维 with sessions timing out after periods of time ranging from 5 minutes to 4 hours after logging in.

Is there any known issues I should check to try to resolve this problem?

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Maybe certain pages are adjusting the Timeout? Look for... Server.ScriptTimeout = x where x is the number of seconds before timeout.

I think the only other place to change Timeout is in IIS.

http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/2275a2ba-5b12-4e18-8266-8a3b0678e419.mspx?mfr=true.

Good luck.