just like to add another 2p of mine. A lot of things dont work with vista yet, it's not fully released yet. Also removing HAL is forcing all the 3rd parties to create a better, more stable, more performance hardware/drivers.
It just amazes me when people write of a OS (any os, not just windows) because they say its not stable, yet it's some 3rd party driver that was rushed and screws everything else up. This last sentance hasnt much to do with the topic, but meh!