I got a new iPod touch 2G about a week ago. I got a silicon case for it and it's been in there since I got it. I took the case off today to take a look at the back and it has these odd scratches on it, I'm not sure how to describe them except they look like little explosions. Is this some kind of defect? :/ How would they have gotten there? I was wondering because I was thinking of taking it back claiming it was defective.