OpenGL apps appear black but they are running

This problem is really getting on my nerves now.
Every OpenGL application I run, have a black screen.
But they are running. If I press ctrl+alt+delete and then press cancel, the screen for the OpenGL application shows, but it only shows one frame.
Is there a solution for this problem?

Vista x64
GeForce 9800GTX
2048 MB RAM
AMD Athlon DualCore 6400+

What driver are you using (provider, version) ?
Is there a difference when you enable/disable Aero ?

Worked when I disabled Aero, thanks