My first Mac. Have it since two days. My thighs are full of MacBook "love marks". The air vent edge in the back (and on the side for that matter) is very SHARP. Is yours to? Or is just my case that fell off the mill before chamfering? Is this a LAPtop? Or should I wear an iApron? or iTrousers? There was none in the box If you are not sure be CAREFUL when you swipe your finger!