NVIDIA posted up their latest beta drivers for all GPUs a few days ago, and have a thread up asking for feedback on them. Update notes mentioned improved performance for 3-way SLI and 4-way SLI surround setups, which is the first mention of surround changes at all in the drivers I've seen in awhile. I gave 'em a try, and I saw fairly significant improvements in performance but steps back in stability. If you want your voice... and more importantly your problems to be acknowledged, this is a good opportunity for it. Gotta make sure all those surround bugs get ironed out.. Only you can prevent buggy drivers!
Feedback thread:
http://forums.nvidia.com/index.php?showtopic=189759
Drivers:
http://www.geforce.com/#/Drivers/Results/25706