One of our clients has a Windows XP machine that they use Remote Desktop on to get to a server. Everything works fine during the session but every time they try to log out the empty session window hangs and won't close. Only options is to end the process to get rid of it as clicking the X won't even close it. The exception to this is that if you connect and disconnect right away without logging in the session will close properly.
I've tried doing a system restore to before she started having the issue, doing all the latest updates, and updating RDP to the latest version. The problem persists.