Well I've just recently received my first Mac, 13" MBP base 2010. I have a couple of concerns about it though, maybe I'm just paranoid but I don't know Mac's well enough to rule out a legitimate problem so here goes. 1.During Super Drive Usage at high speeds with a variety of discs (CD burning, Starcraft 2, Spore, Etc) I experience what I believe to be an excessive vibration in the drive. At times the whole computer feels like an electronic massager, normal? Any suggestions? 2.Grinding sound on boot up. It could either be the hard drive or the super drive, and I'm thinking the later. Is this normal? Happens very close together with the ding sound the grey screen makes... if that sound is off it seems very loud. 3.When playing back video files often during playback an after image will be left on the screen until the scene changes completely. It's a bit hard to describe, almost as if part of the video has frozen and the other part keeps moving but pixilated on the edges. Will happen most frequently on a close up of someone talking, the background freezes and there head keeps trying to move but gets distorted.