I hadn't heard it before, but it's a great term! I know one multiplayer Flash service has a problem where their server clocks had drifted apart, and it caused

I hadn't heard it before, but it's a great term! I know one multiplayer Flash service has a problem where their server clocks had drifted apart, and it caused all sorts of crazy issues. Took them a couple of weeks to figure it out and fix the problem. Not quite a Heisenbug maybe, but close. (http://playerio.com/forum/multiplayer/room-disappears-from-list-while-still-active-t33960 http://playerio.com/forum/multiplayer/room-disappears-from-l...) I've had bugs before that have seemed to come and go for absolutely no reason - I think they involved corrupted incremental compilations, but who knows.