Today we found this nice explanation on the wikipedia.
it was indeed a bug :D :D :D
http://en.wikipedia.org/wiki/Software_bug to read the full article on wikipedia.
And if you don’t know what is a relay, this is a sample, that’s why in 1945 a computer was large as a room ;P;P;P
And if you need a DeBugger…
this is patented :D