Hi Howard, I had a similar incident about a year ago. I was asleep and woke up to a loud crack followed by a sizzle. I thought sure that a wall-wart or something similar had bit the dust and was going to be smoking but when I jumped out of bed and turned on the light, there was no smoke or smell or any other sign of what had made the noise. Initially, I hypothesized that it was probably the sound of a power surge heard through my PC speakers (which were on and powered by a wall-wart), but months later I found my answer: I opened up a hand-held shortwave receiver to discover that one of its AA cells had opened up and was leaking. I was surprised that it was so loud! Merry Christmas to all! Sean -- Copied Text -- I had a worrying incident about a week ago - in my living room, where a lot of my computer equipment and some electronics is located, there was a loud "crack" sound, that could easily have been a small capacitor exploding, but I have no idea where it came from, and everything in the room is still working! I wonder what it was? :-# -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist