I just exchanged my Smart Cover because it was smudging the iPad's aluminum and giving itself black marks. I had read online that someone got theirs exchanged easily at the Apple Store but my Genius was reluctant to do the exchange, stating that his did the same thing and that this new one will end up doing it also. The marks on the aluminum don't come off and the marks on the backside of the cover were about 3-4x larger than the one in the picture. I'm positive it's an isolated issue and not a design flaw so I want to check with the macrumors community. My new one doesn't seem to have the same issue yet. I noticed it within a week of purchase, so I'm betting it either clearly has the problem or clearly doesn't.