Don't see it posted on the feedback round-up, certainly not since 2D just came out...
Basically, 8Q and 16Q levels of AA seem to be consistantly borked. Using a single Nvidia GTX280 & 180.48 drivers, game works flawlessly otherwise. The instant I go to 8Q or 16Q, the screen goes garbled whenever I try to move the mouse. I switch back to regular AA, problem's gone. This honestly isn't a big issue for me, but my card seemed to have the processing headroom, so I was trying it out. Whether it's an issue of non-support or a bug, consider this a heads up. If I have time, I'll maybe give the 181.20/22's a try, although I don't recall anything in their release notes regarding this issue.