"stuck" -> The tiniest bits of dust or crumbs makes keys still and not work. It's super annoying to blow on the keyboard to try to get a key to start working again.
According the ATP.fm the only safe way to clean the dust out of it is to take it to an Apple store. You can easily destroy the mechanism if you manage to pry the keys off.
I imagine this will be fixed in the next iteration though.
I imagine this will be fixed in the next iteration though.