Haven't even had a full charge cycle on it yet from how new it is.. I was looking it over as I was using it today and I noticed when viewing the left palm rest area under the control button there is a tiny little stress mark on the actual aluminum. I tried taking a picture with a magnifying glass to show you guys but doesn't come up that well. Funny thing is if you look at the MBP from the left hand side in an angle or directly on top of it you don't notice it at all. However, when you look at it from the right in a slight angle it shows up like a sore thumb. I'm taking it back tomorrow to get a new one, just thought I'd share..