Thanks spinner and odeathoflife for explaining. I guess Flachwichser is a good translation ;-). But anyway, back to the topic: I think Varian's suggestion is very good. Just imagine someone had a bad time three years ago and recieved 2 warnings and behaved since then and now makes one mistake and gets kicked completly. Don't think that is fair. If someone is behaving and does not make trouble anymore the old mistakes should be forgiven and the warnings removed after a period of probation.

Every organisation rests upon a mountain of secrets ~ Julian Assange