I've had a few keys get stuck and then kind of unstuck. I like this keyboard but it has been a pain in that regard. As of right now, my L key is stuck something awful. It registers but man I've got to kind of whack it a bit. I'm going to try the compressed air trick.
EDIT: Christ, I just blew around the L key, WITH MY MOUTH, and the key is unstuck. LOLOLOLOL!