Do we have any good stories about unusual or interesting failures in mechanical or electrical systems? I probably have ten or twenty, or a hundred good stories, but the most recent involved what turned out to be an intermittent CPU failure in a remote control station on the coast of Oregon. When I finally figured out the culprit - the CPU - I pulled it apart and found a ladybug stuck between two surface mount PCBs. The circuits are so small that a ladybug can now effectively short circuit eight or ten traces at once. Apparently this caused the failure. It was a terribly difficult problem to diagnose. The thing worked 99+% of the time. In fact this problem had apparently plagued the state for several years before we found it. It had caused a general system failure and the loss of the program; which was not backed up and that I had to write from scratch. [yay] They had assumed that the program was lost due to a low battery and a loss of line power; but not so. A $10K+ ladybug funeral? :surprise: That was just the cost of the CPU.