I'm sure this has been asked before... where can you buy replacement rubber feet for the iBook? Went through airport security last week. Forgot to remove my iBook from my backpack. While they were inspecting my shoes (steel in them) the other security person took it out, a foot grabbed on a book in the bag with it, the foot ripped off and has never been seen since. I discovered it only after getting to destination. Moral, take out your laptop before going trough security. Paul