I caught this CFL burnt out last night from down the hallway. When we walked into the kitchen to check on it, we found it dark, except for the spot glowing cherry red in the light in the ceiling...
Note the burnt section in the right-hand photo. We replaced the bulb with a different brand CFL only because we already had one. As soon as the remaining CFLs are used up, we will be replacing them with LEDs. This one lasted about half it's stated lifespan, approx. 5.5 years.
Guess the power company (Duke) did not thoroughly review thier free product quality. Now they give away a different brand. I find little comfort in contemplating the power company desiring to burn my house down in the middle of a cold winter night.
`Casper "Oh, yeah. Oooh, ahhh, that's how it always starts. Then later there's running and screaming." -Dr. Ian Malcom