>>If you have any themes or Aero going that might cause it too...
>
>I don't know anything about themese or Aero so, if it happens, it is not based on anything I have done.
I think a while ago I was getting similar problem sometimes. I don't remember how I "fixed" it - may be I did update the Video Driver. I haven't seen this problem for a long time.
If it's not broken, fix it until it is.
My Blog