Best buy has the ultra thin keyboard on sale this week. As I was looking at it in the store, it looked like a great idea and it felt comfortable to type on. BUT: Every set of reviews I have seen online is that the rubber strip in the slot that holds the ipad comes off after a relatively short time of usage. The leftover residue then gets on the ipad screen. My question is : why is it so popular then? Do you that have them simply deal with the glue residue? Is there some permanent fix that I haven't seen online yet?