I was using Photoshop CS5 when suddenly my Mac OS starts acting strange: the finder windows are black, or have black squares and red lines behind the icons, the menus are transparent.
I erased MacHD and reinstalled the OS(Mountain Lion), everything was back to normal until I reinstalled suite CS5, and I'm back with the same issue.
It can't be the hardware, because the computer Works fine in safe mode.
I posted this here too, waiting deperately for an answer.
Thanks everyone for your keen attention. The good news is that it is NOT Adobe causing the issues. I did another formatting of my HD and reinstallation, and the problem is now showing without CS5 in the picture.