Interestingly UL lists these bulbs and recognized this type of failure mode as acceptable. So THEY say it is not a fire hazard. There is no verified evidence that a CFL ever caused fire due to their failure mode.
CFL's and other fluorescent lights along with HPS, MH and Mercury bulb contain mercury which is a liquid metal and needs to be disposed properly. (Most of your BigBox stores will accept them for recycling.)
Be mindful when installing CFL's and don't install them outdoors or in an enclosed fixture unless the carton specifically says so. LZW February 11 2011, 10:36 am EST
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