I am dead serious. You will get ten american dollars, worth just as much today as tomorrow probably, if you come over to my apartment and locate just what exactly is beeping every 30 seconds or so. For real. There is a beeping somewhere MAYBE in the hallway, maybe not, and it's been going on for two months straight without us being able to find it. Do you have superhearing? Persistence? Maybe you just really need ten bucks? COME ON OVER.