I've had the 'hot fix' 8.10 driver for a week now. I downloaded the driver stand alone, and treated it as just that. I cleaned out the old one and put this one on. Though I've been wondering since it's a 'hot fix,' if I'm supposed to do something else as well? It's been working what seems ok in Vista, but when I swapped my 8.10 Beta for 8.10 hotfix in XP, I had several noticeable IQ and performance issues in multiple 3d applications.