Recently moved from a GTX580 to a GTX680. Card works fine in BF3, even when I have it overclocked. Temps are fine, they have yet to go above 65C. But every once in awhile, the game looses focus on DirectX and crashes. Now, looking at the graph at the time of the crash, it appears to have something to do with how the card does its boost clock. The game stays at it's boost clock pretty much the whole time unless I am zoning. Every once in awhile though, it drops the boost clock and I believe that is when the game crashes.
When the game crashes again I'll get a screen shot of the graph from EVGA PrecisionX and highlight the area of the time of the crash.
If anybody else is experiencing issues please post so either SE can do something or so SE can let Nvidia know about it so it can hopefully get fixed in the next driver.