If you notice that it happens mostly on bulbs that have been burnt out for a
while, then possibly humidity is causing corrosion on the base.

"Greg G" wrote in message
news
Am I imagining this, or is there something different about light bulb
sockets or the threads on the bulbs themselves that makes them more
difficult to screw in, and especially remove, than they used to be?
Are the threads made of a different, presumably cheaper, metal? Is it
China's fault?

Being busy, I tend to let the chore of changing bulbs wait until I
find my wife in a miner's helmet with a disapproving look on her face.
So I change a few at a time. What a chore. Recessed fixtures can be
nearly impossible.

Has anybody else noticed this? Any solutions?

Greg Guarino