I have a "Windows Server 2003 R2 Enterprise x64" server running Terminal Services. Suddenly it started taking a long time (about 1 minute or two) when users logon/logoff. When a user executes RDP they get the login screen is less than a second. After the enter their credentials the entire screen stays blue or gray for at least 1 minute. When the users logs off the Winodws "logoff" prompt stays on the screen for a couple of minutes. If I login from the console the login/logoff process is immediate (about a second or 2). Windows is not reporting any errors in the Event Viewer.
I took the following steps and they did not improv the speed at all:
I installed the x64 version of uphclean 2.0.
I deleted all profiles older than 60 days.
I verified that no group policies were mapping folders or roaming profiles. In fact there are not any group policies enabled.