COM+ in Windows 2003
Apparently, there are some major bugs in COM+ in Windows 2003. Not only does the application that I support and maintain (somebody else wrote it), but I just found out this week that another application that I was involved with writing that uses COM+ has problems. Both apps ran on Windows 2000, but under Windows 2003, they both seem to have problems. In talking to Microsoft Support, I am thinking the problem is COM+. There seem to be too many issues listed in the Support Knowledge Base that require a call to Support for a Hotfix for my taste.
http://morewally.com/cs/blogs/wallym/archive/2006/06/21/80.aspx