Crysis2 on 1 8800 ultra:

Crysis2 on 2x8800 ultra sli (As you notice, no decent AA.. Beside that, flickering is almost gone, still some when dead and on some spots. Hopefully flickering solved with next patch):

Using 267.24 beta with nvidia slipatch (tried 270.51, other drivers, evga slipatch, etc.. same problem).