I'd check for bugs blocking the airflow around the smokes. I had a duplex last spring that had smokes going off at odd times - both sides - separate services - The general wanted to save money when building and poured the basement floors over the straw in the winter - What happened was that millions of fungus gnats came up through the floor - thousands of them camped out in the basement smoke housing - Was a pain until I finally figured out the problem - they were Firex and then I put in Kidde - although I don't think it was Firex's fault - as far as the bulbs blowing (just in the basement keyless?) - could be too much vibration - I'd loosen the #8's a little and don't screw the bulb in real tight - I've seen cheap bulbs do that too- they get a lot brighter and then blow soon thereafter - just my 2 cents
