Known issues for driver version 91.32 found with testing on the XPS 700: 


1. Can enable Extended Desktop without display being attached. Extended desktop can be checked even without any other displays attached to the system when SLI is turned off. Files can be moved to that virtual desktop that is not connected. If  you play MPEG files using WMP and move to that desktop, Player continues to play but cannot be seen.

2. Machine Check event returning from S4 in Windows Professional x64.   Checking the event viewer there are noticable warnings for this most of the time and red X errors only intermitently. Seen on both Single and Dual configs. Both 7900 GS and 7900 GTX.