I have a BTO 13/8/128. When I powered it off for the first time, I noticed a couple of marks on the screen. They look like scratches, and they're under the screen in what appears to be a metallic coating. They aren't visible when the machine is on. Any other MBA owners have this? Apple said to take it my local authorized repair shop. I will, but in the meantime, I'm curious if anyone else has seen these and, if so, what the cause and repair were.