Hi, I've been experiencing this problem between two Windows 7, 64-bit machines as well.
I've found that leaving the remote desktop open 'till the screen saving/desktop lock function kicks in works around the problem. When you log back in directly on the desktop login page on the host, the desktop will show again.
Note: In my case, the problem doesn't seem correlated with multiple users logged onto the host (although there may have been multiple sessions active in the past, they've all been closed and the problem still occurs)
So, set the screen lock period to something low and acceptable and you will never have to reboot the machine if you have time to wait for that amount of time.
A real fix would be nice, though!
(I wonder if it's related to the graphics driver/card? I'm using nVidia)
Last edited by mtbauer : 05-13-2011 at 06:21 AM.