Well two issues.
I have some sympathy for those who bought an upgrade card with the "Vista Ready" logo on it. My view is it is clear misrepresentation and potentially actionable. Whether the action is worth it. Probably not, other than to embarrass nVidea.
For the rest of us with nVidea graphics cards (yes I am one) there is the usual frustration of a new OS which has hardly been a secret which does not have the drivers (other than Beta) ready on time. (Big sigh)
In keeping with my usual high standards of integrity and having posted widely here that I would not go to Vista because of the cost issues I am ...... in an.....embarrassing position of having ordered my copy from Amazon yesterday. (head ducks below parapet)
So I either run with Beta drivers or wait. I think I'll wait.