One of my 2010 MacBooks is starting to get cracks. Is this typical? It's only 8 months old and I thought these white unibody models were supposed to be better than the older 2007-2008 MacBook models. Lid - At both corners of the hinge (maybe 3/4" to 1" long at each hinge). Not viewable when looking at the screen, but from the back side or when the lid is closed. Body - A little below the track pad, I have a crescent shaped crack. Pretty much around one of the bottom plate screws, but about an inch long crescent crack. Does Apple repair/replace these kinds of cracks for free at the Genius Bar? Just wanted to get some feedback if anyone else has experienced this as well before I take it in to the local Apple store. Thanks!