I have a 11.6" MBA, and today I was cleaning the screen when I noticed a line. Thinking it was just something built up on the screen, I just kept cleaning. Now I find divots in the screen. These are centered on the raised area above the trackpad and below the spacebar. They're deep enough to snag a fingernail if you gently run your nail over them. Anybody see this before? I had a couple of PowerBooks and a MacBook that would pick up oil off the keyboard onto the screen, but no lasting scratches like this. It barely leaves my desk and is carried in a Booq Vyper case if it does. Nothing really in the case so I don't think it is having excess pressure on the lid. I've scheduled an appointment to have Apple look at it.