We have commented on NVidia's problems making video drivers for Microsoft Vista only to note it happening. I am pretty understanding on this count because I think I understand the difficulties of accomodating DirectX, especially version 10, and the crushing DRM for high-def content Vista requires. Still, there is no doubt they are late and are not making anything like satisfactory progress. The "Vista compatibility" they tout is less than full.
Now, some users have decided to take real issue with NVidia and at the link above they are collecting evidence for consideration in beginning a class-action lawsuit against NVidia in the US. I post this only for your consideration because I know some of our listeners are angry at the situation.