The first "documented" computer was a 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 on September 9 1947 (62 years ago). Grace Hopper affixed the moth to the computer log, with the entry: "First actual case of bug being found."
Check out the picture
I am just glad most of the software bugs I find don't have legs.
Confession 38: The first computer bug : found Sept 9th