It started happening again after the recent update.
Small edit:
It seems that the flicker actually happens when I turn the Vsync on, if I turn it off I get refresh lines scrolling across the screen at high speed.
Every other game, after I run crysis 2, has this problem, flicker with Vsync activated and scan lines when I turn vsync off. If I don't run crysis 2, there are no such problems. This is just annoying beyond belief.
My specs are:
ATI Radeon 5970 black using 11.3 ccc app drivers, Intel i7 920, 8Gb ram running on windows 7 64bit.