Looks like I have one of the bad iMac G5 logic boards that cause the screen to go crazy and the system to lock up. It seems pretty intermittent, but frequent. I called up Apple and since I don't have extended AppleCare they won't help me, which I have decided is crap. I have to take it into a service center. I have a clear hardware issue, but they won't do anything even tho it is under the warranty still. This is the 2nd (3rd if you count the loud fan complaints) issue I have had with this Mac in about 4 months. It's crazy! I'm going to box it up and bring it in either tomorrow or over the weekend, but I'm not sure where yet. There's a CompUSA nearby, but I don't really trust them at all. The university in my town apparently has an authorized service center, maybe I will try them. I don't want to be without my machine for weeks on end waiting for it to get parts in. I would really like a replacement. First the super loud fans, which they say they know about but can't do anything for. Then the harddrive fails without any notice what so ever, and now this. It's ridiculous! Any tips for getting hem to replace rather than repair my machine?