I experienced the reverse, ATi drivers on RC2 = display distortions on vista, nvidia on RC2 = perfect.. Perhaps the problems people have been having is with bleeding edge equipment*, give it time, nVidia and ATi will both iron out the kinks, as someone mentioned earlier nVidia drivers on Linux work, ATi's don't, they just apear to be completely broke by design.
* Disclaimer: This is an educated guess, as I never use bleeding edge hardware, I tend to always let the stoogies go ahead and buy the bleeding edge at premium prices with buggy software so I can go in 8-12 months, buy cheap and strongly supported, heh, some people will never learn. Only time I need to complain is when a product that's over a year old and still has buggy drivers, thus (mostly) warrented rants.