[Freude am Fahren]

I also had a problem with a set of DD's 6000k bulbs. The driver's side went out. I put my OEM's back in and no problems. They were about 9 months old. Did you notice any strange smells coming from the fixture when you took the bad ones out? That worried me. The connector looked kinda dirty/corroded as well.

I've had a lot of other dealings with Diode Dynamics by the way, including changing my mind on color temps and such, and they've always had great service.