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1.
A bug in software that comes from Copy&Pasting code.

The name comes from a former minister in germany (Guttenberg) who cheated in his doctoral thesis by copying large passages without marking them as quotations. He lost his degree and the position as minister.
developer a> The login does not work. I thougt it was just like the sign-up?
developer b> ahh, seems like you found a guttenbug :)
by der_kronn April 21, 2013