> these CFLs (all different brands) seem to have had self-destructive thermal > problems What type of fittings do you tend to use In my experiance the worst situation for a CFL is a small enclosed fitting with the lampholder at the top. The heat rises to the top of the fitting where it is trapped cooking the electronics. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist