>Unfortunately, the changes you suggested have not had an effect. The timeout still occurs at about 20 minutes. I will continue to research, but this is a tedious process to test, as setting it up and testing takes time and can only be done after hours.
>
>If you have any other suggestions, I would be happy to hear. If not, thanks again for your help.
>

Why don't you post your web.config file (just remember to strip out any sensitive info). You didn't happen to be changing the web.config at the same time (or dropping in new DLL's, etc)? If so, that causes ASP.NET to unload/reload (losing the session).