Just back from taking N3 and got a coffee on the way home. Get this: I thought something was terribly wrong with my door when I got home! I tried unlocking it and when I turned the door knob, it was as if it were still locked! "S*!t!" I said to myself. "They changed the locks on me. Or somebody got in and has locked the door!" I tried the lock again. Well it opened this time! I was turning it to lock it, not to UNlock it! D'oh!!