My exterior lights on the front of the house have 4 lights all attached to the same switch. In all 4 of them, I installed the same led bulbs when we bought the house. 3 of them are still the bulbs I installed 3 years ago, but the 4th is an issue. I've had to change out the bulb 5 times now, the bulb literally only lasts about a month, if that. It's only been 5 changes out of laziness and generally still enough light. That said, any ideas on what could be causing this one outlet to keep burning out bulbs?