I replaced all of the ceiling light bulbs with dimmable LEDs. They were not the cheapest bulbs but not ridiculously expensive either. They dim and brighten just like the incandescent bulbs but one thing. The first evening, I noticed that the LEDs glowed ever so slightly even when the dimmer was turned off. I should note that these are the auto-dim type dimmers. They turn the incandescent bulbs off totally. Anyone else come across this?