I'm running this:
Gigabyte x58A-UD9 motherboard; i7 980x CPU; 12gb 3channel ddr3 2000cas 9 (3x4gb); 3x gtx480 SLI; 1x gts450 (physX and 4th display);1500W silverstone Strider PSU;Areca 1880i Raid adapter
(dxdiag https://docs.google.com/document/pub?id=1vf3MnF_QkaJmtanC8ZeqEEs_iV76xeYxj0pLXuzozgw )
I have 2 issues mainly. Both seem related to the way that the SLI is handling the post-processing, like it's not sharing the rendering properly.
The motion-Blur is an easy spot to see this in action. Here's 2 SS, one with SLI disabled and the second with it enabled. Note how odd the effect is with SLI.
Blur looking normal, SLI disabled

Blur looking like a trailing ghost-image with SLI enabled. (not nice)

The second issue involves shadows flickering on and off as my view moves. Here's a youtube vid showing it. (youtube conversion to 30 fps makes it appear a bit less flickery)
http://www.youtube.com/watch?v=DjpN5HoX8xA
Now I have tried every Nvidia driver in existance from the last 6 months as well as all the tweaks and tips in the thread in the forums. The only thing that fixes it is disabling my SLI which is not an option if I want to play this at 5760x1080 or in 3dVision.
I also tried dedicating one of the 480's to physX so the driver ran 2 way SLI instead of 3, and it did this

http://www.youtube.com/watch?v=40z5CUUvxsc
Please fix.