The 81.85 drivers seem to break the dualview mode for users with dual monitor setups, at least under certain circumstances.
So far the only relation I can find between given people having the problem (myself included) is that we have AGP 6800GT 256mb cards and are running at least two monitors at a resolution at or higher than 1280x1024.
Basically, I can install the drivers and run games and use windows just fine as long as I only use the clone mode, which is useless as it displays the same thing on both monitors. The minute I enable dualview the computer hard locks, then proceeds to give me a wonderful blue memory dump screen. I've tried any number of things to fix it, and come up with nothing.
I really wish Nvidia would fix this, as it's been an issue with every single 81. series driver I've tried so far, beta or not.
I've had to revert to the 78.01 drivers to keep my setup working the way I like it.
Has anybody else here had any similar problems?