My girlfriend's macbook's warranty is coming to an end. There is a tiny crack-like line underneath around the vent area - just like this : http://forums.macrumors.com/showthread.php?t=296213&highlight=Macbook+cracks It doesn't appear to be a real crack yet, but it's definitely some kind of stress line and it extends along the vent and a little bit up toward the hinge where it is even more faint. Question: should I get this fixed under warranty or is it unlikely to develop into something much worse? Any opinions? I hate going in to the apple store because they're arrogant and always try to get out of fixing things. Puts me in a bad mood. This will the be the fourth repair of this computer - 1 LCD replacement, 1 batter replacement, 1 inverter replacement and now this. Great Apple quality.