I've searched both Google and Mroogle and only found one other person having the same issue (link below). Basically, when I close the lid of my MBP, I believe the keys are touching the glass of the screen. I don't put anything on top of my Mac, so there is no way that I could be pushing down on the screen. I noticed this by seeing smudges on the screen in a perfect square of a key, mostly along the middle row. I've cleaned it in the past suspected it was just normal grime from the screen getting touched or anything else, but I've noticed it comes back. It's really annoying, and I would like to get this fixed if it isn't normal (and I feel it really shouldn't be). Would you guys try getting it repaired at an Apple store? I just got the machine in Feb, and I first noticed the issue as early as a week after having the machine. Thread I found of similar issue: http://discussions.apple.com/message.jspa?messageID=12686963 Edit: Just looked a little closer and my middle row keys are slightly imperfect compared to the rest. Keys seem to be angled to one side or the other, and not level as with the rest of the keys.