Nvidia has it's share of problems, you just grabbed an ATI and the latest drivers at a time ATI is trying to do what nvidia isn't. Actually make the current drivers work WELL for older cards (G4's work on nvidia's new drivers, but not as well) and also some other things. Seems all ATI's problems have come in the past two months with driver releases 3.8 and 3.9 - 3.7 is fine.

I used to like nvidia, but until they offer the best bang for the buck, I'm with ATI.