I have MacBook Pro 13" Mid 2010, NVIDIA GeForce GT 320M
Recently (but right after installing OS X Lion) I've encountered artifacts on my screen. It's quite often and I can't say if the problem came from Lion (which brought me also problems with sleeping and few freezes, which I never had on Snow Leopard)
So is there any good way how to test my graphics card? or just it's video memory?