I have a 6 m/o smoke detector that is acting strangely. Every few hours or so (no real pattern), it will go off for about 10 seconds. It is hardwired power-wise, and we've replaced its little backup battery. It wasn't exactly a cheap unit, it has one of those ionization type deals in it also.
Is it trying to tell me something? And no, I do not currently have any fires in my house.