Hi guys, Ever since I've gotten this MBP I've been extremely happy except for one thing. I didn't notice at first, but when I started doing things like playing Portal 2, watch movies or even the screensaver, the screen would freeze, start flickering a bit and display lines. When that happens, it takes OS X with it, because nothing seems to react. Alt tab, power button, CMD + Q, nothing happens. Now, I've got my suspicions about this: It's most likely the AMD card. I've been using GFXStatus to force the system to use the Intel card, which is not that bad, but far from ideal for a laptop for which I've paid 2285 for. Any ideas? I am looking to go to an Apple Authorized Service Center, but I simply can't afford to lose my computer for a week (Graphic Design student, finals coming up), as this is my primary computer.