For those who don't feel right testing out the beta drivers, nVidia has released a WHQL driver set today, a few days after a beta set. Driver set ForceWare 84.21 is available for download at nVidia's site
right now, and the update brings some very nice fixes. SLI now has proper HD output support, as well as the proper VSync support that the beta drivers gave to SLI configurations, and for videophiles that's a must. If you are using a GeForce based card, snag it.