I've noticed that I get some artifacts with the "sky" (well, not exactly the sky, but I can't find the word in english).
The pictures below are clear enough, I guess, to explain what I mean.
Same thing, seen from the space :
Also, I noticed some black dots in the sky. I though it was the stars, but I don't think so,
because I never had this before and you still can see the "white dots" for the stars.
My config:
- Windows 7 x64
- Nvidia Gforce 560M (drivers up-to-date, I think).