Not a big techie but wandered in here tonight and cant help commenting.
A long time ago after a visit to pprune chat the next time I logged in I got the same message as whirlybird. Turns out I had been banned for bad behaviour. I know no-one will beleive me now, they didnt at the time, but I didnt post the bad messages. I saw them too, and according to the moderator apparantly they came from my IP address but I did not type them. I have never found an explanantion.