Hi Ross,
Do you have a virus scanner enabled on your system? If so, you may need to ensure that it is not scanning through the OMA binaries directory. The issue may be that every time a virus scanner accesses a file in OMA directory, it modifies its time accessed stamp
- if this happens to web.config, ASP.NET will restart and your session will become invalidated. This is mentioned and explained in a bit more detail in Exchange Server 2003 release notes which can be found on your install CD or at
http://www.microsoft.com/downloads/details.aspx?FamilyID=be0ad0c7-0291-4176-8279-449033f1957e&displaylang=en
http://www.microsoft.com/downloads/details.aspx?FamilyID=be0ad0c7-0291-4176-8279-449033f1957e&displaylang=en