aheath writes "According to the US Naval Historical Center the first computer bug was logged on September 9, 1945 at 15:45: "Moth found trapped between points at Relay # 70, Panel F, of the Mark II Aiken Relay Calculator while it was being tested at Harvard University, 9 September 1945. The operators affixed the moth to the computer log, with the entry: "First actual case of bug being found". They put out the word that they had "debugged" the machine, thus introducing the term "debugging a computer program". The Wikipedia has a "computer bug" entry that lists some other "famous bugs" including the fictional HAL 9000 bug. What is your favorite computer bug story?"