Screen flicker when dragging documents

It's been a month since the last post. Just curious if anyone has upgraded to Mountain Lion and seen the issue go away? The flashing didn't bother me at first, but it's getting worse, and now I see a scrambled video image (like in the OP's video). This made me thing logic board as I just replaced my older white iMac due to graphics issues.

I ha the issue on both my iMac and MacBook Air.

After upgrading to ML is has disappeared.

Best of luck!

Three weeks on ML, no problem so far.

Hi, I upgraded to Mountain Lion a few weeks ago, this has fixed the flickering issue for me.

changing my desktop image seemed to do it for me...for now!