i have an early 2008 macbook pro, and i have noticed that when applying light pressure to the right side of the screen, especially the lower right hand corners, artifacts on the screen appear. i have a feeling that the display cables are a little loose. i brought it to the apple store once, but they couldnt seem to reproduce it, and syas i must be pressing too hard but the past few days, even light touches to get rid of smudges cause intense artifacts. do you guys think it is the cabling? or the whole display module is messed up?