I’m having the same problem (been having it ever since I got the darned thing). For stills, the DOF filter works great. For motion, it flickers all over the place. I refuse to believe no one else is facing this issue!
I’ve tried everything from changing anti-aliasing settings, lens intensity, radiosity, sharpness… doesn’t affect it in the least. I’ll be emailing Maxon right after this, but please post if you’ve either seen this problem or (better yet) solved it.