Its either those nforce drivers, or these beta geforce drivers, or well, both.

But, i completed the first level of CoH:OF with SLI, usually i cant get 1/3rd of the way with SLI enabled.
Now i just played about an hour and a half of Crysis, no hassles.

Of course, now that ive said that im going to get a freeze.

But until then, im a happy chappy