I installed four can lights in my living room. the other night i was sitting out there with them on and all of a sudden one goes out... no big deal thought bulb burnt out. five minutes later another one goes out. now im getting kinda pissed that both bulbs burnt out so soon( only been two months from install). about 20 min later the first one to burn out comes on. i check the bulbs, there both tight. so i shut all of them off. hour later i turn them on and the all come one. so i was wondering do the can light balists shutoff if they start to get to hot? is this normal? or do i have some wierd electrical problem. it makes me a little nervous. i checked the wiring and it looks ok.