desktop wallpaper turns black?

I'm having a problem where the desktop wallpaper slide show always turns black after certain period of time and waking up from hibernation. Changing the resolution sometimes helps, so does logging off and back in. It's a pretty annoying problem, anyone else experiencing the same thing? btw, the black color might just be my solid color choice.

I'm using a Thinkpad T60. This problem never happens on my desktop.

I'm having the same problem on my desktop when I exit COD4. The screen turns black and I'm not able to change the background except with a reboot.

I'm having this problem as well, I only just installed Windows 7 at first the desktop was fine, now I can change the colour but can't set a desktop image, any ideas?

coder