I have a client using SBS 2011, Server 2003 running Terminal Services and a mixed bag of thin clients and PCs. And, yes, I know they should get rid of the 2003 box but that's another conversation.
When one of the thin client users logs in, he simply gets a blank screen. This problem is ONLY for one user and occurs even if he logs in via another thin client.
I connected remotely and logged in as this user and got to the desktop, but could not open any applications. All other users are working normally.