I guess that this problem can't affect all 7*00 owners but they are still selling buckets of them. Surely there must be a fair proportion of people who are buying brand new cards that don't work properly with vista...?
I have a BFG 7600GT GPU and Vista is fine for me. I am Running vista ultimate 64 bit. I don't know if the 64 version has anything to do with the difference but when i installed windows i didn't even update the drivers i used the ones from Windows