How long do your light bulbs typically last? Mine are lasting about a month these days. Is that unusual? I'm buying a popular brand (whose name includes the letters "G" and "E"). Is it my imagination, or has something changed over the last year? Back in the old days, my light bulbs used to last for years. I wouldn't find myself up on the chair but once a year. Lately it's been once a week. What's up with that? Is anyone having a similar experience?