Hi. I was lurking. The term was old by the time Hopper found her physical bug causing her compuer bug. The Jargon File has more information. I find some of the older entymology suspect, but Hopper's bug validates that the term predates digital computers, probably by decades. http://www.tuxedo.org/~esr/jargon/html/entry/bug.html My apologies for the off-topic post. Tim