This happened twice in one week on two different ceiling light fixtures, so I’m really concerned if there’s some kind of electrical problem going on in my apartment. I wasn’t there when the first bulb went out. I just saw it hanging from the ceiling. The second time it happened, the light bulb made a popping sound and went out. When I went to see what happened, the glass bulb was hanging by a wire from its metal base, just like the one before. I had to use pliers to unscrew the light bulb base from the ceiling fixture. Is this normal or should I be concerned? Is there danger of my apartment catching on fire from this?