I exchanged my original surface I mentioned in this thread a while back. My exchange does not have the air bubble issue but whenever I am on a white background there seems to be this black diamond "smudge" on the screen. It's annoying, but not all of the time, fine in games, movies, photos, etc. It's hard enough to see that if I wanted to exchange it they'd probably think I was crazy. You only really notice it after extended use of time (exceptionally annoying in MS word). See attached image: Anyone else have these faint black smudges on their surface?