So I was having screen artifacts, and randomly my screen would just go black. The computer was still running, because any Music I was listening to etc..., would keep playing but I couldn't see the screen. I replaced my RAM about a month ago (was upgrading anyway), and both problems seemed to go away, until recently. I way doing a screen sharing session with a friend about a week ago, and my screen went black, we were still connected, and he said that all he saw on my screen was a mess of lines and static etc.... Im also getting the artifacts again, and some windows are getting distorted when dragging. Im assuming that the artifacts, and the black screens are related. I don't know why it started happening again, but Im getting kinda annoyed! The computer has also froze 2x today while moving the mouse around in the dock/stacks kinda fast, I didn't get the black screen this time just freezing. I've been reading the discussion on Apples site, and people are saying Leopard is frying the Graphics Cards. Im just trying to figure out exactly what is to blame here? Is my Graphics card dying, which I think is unlikely since so many people are having the artifacts Is it just a driver issue with Leopard Or is Leopard (specifically Core Animation) just pushing my Graphics card too much and causing it to overheat? Right now my GPU temp is 76C 169F, with nothing graphics intensive running, just OS X it-self. Is that too hot? What temps are you guys getting with your X1600s? I have a 1.83Ghz Core Duo iMac with an X1600 Here are some screenshots. Am I correct in assuming if it was actually Hardware related that I wouldn't be able to see the artifacts in screen shots? Sorry for the long post, Im just getting really annoyed I was hoping 10.5.2, and the Graphics Update would fix this, but apparently not! EDIT: I tried to minimize this thread, and it froze again 1/2 through minimizing, I had to turn it off, and back on then it froze again! Seems to be working for right now, but this is annoying! EDIT 2: It just did it again with a stack P.S. w00t Im a 65816 One Thousand Posts! Yay!