Some are having a hard time believing a publisher would be banned so quickly for such a mistake. Some are saying it is possible and are trying to ensure things like this do not happen to themselves.
Netmeg said that she is extra careful:
Stuff like this is why I watch my traffic like a hawk (not my AdSense, my traffic) and if I see any anomalies, AdSense comes off till I nail them down.
I guess that is being incredibly careful.
Are you paranoid about this? Have you seen anything like this before?
Forum discussion at WebmasterWorld.