Running 10.8.2 iMac 24" system, recently having flickering when opening a window every 12 seconds. I have had a mac pro ruled out a hardware problem. It may be a software problem. It also kicks me out of the window screen.
Every time when opening a window, I have a flickering in the window every 12 seconds. Ruled out a hardware problem, it seems to be software. It seems since updating to 10.8.2
iMac, OS X Mountain Lion (10.8.2)
