User session times out

Question

My application shares the session state between classic ASP and ASP.NET hosted on IIS 5.0 and windows 2000 server. The session timeout defined in the ASP.NET web.config is 20 minutes and the Application session timeout in IIS server is 20 minutes (default). When I faced the user session times out with the .NET pages in 20 minutes, I have increased the session timout value in the web.config but didn't yield anything. I have also tried in setting the seeion timeout value in the Session_Start event handler, didn't yield much. Interestingly, the Session.Timeout debugging statement reflects the change in SessionTimeout but the application still behaves the same way (times out in 20 minutes). The session state mode is InProc but the session values are stored in sql server database accessible by both ASp and ASP.NET and the session is transferred in between classic ASP and ASP.NET. Can you please help me out in resolving this issue.