When i playing penumbra all walls are blinking.
i have installed both patch's and the same problem remains.
In penumbra overture patch solved the problem.
My video card: Ati radeon HD5970
i have readed, what i have to do to fix ati cards problem.
I updated ati catalyst to the newest version.
In catalyst control panel i changed all settings like it was writen in patch 1.1 log. except adaptive AA off. i couldn found where it was.
Also i changed windows 7 theme into basic (which means no aero)
And finally the same problem left.
What i have to to fix it finally?
it is hard to print screen of ths glitch, because it can be seen best when you moving in the game.