The ban list has always been in the Admin bit. I wonder if for some reason Alex's ISP changed to one that was already in the filter? If we get people persistently signing up when they've been banned so that could be a reason.
It certainly wouldn't have been added to deliberately ban you, Alex, but it is possible I did it in error whilst trying to get rid of someone else.
No, I don't think it's the same ban list, Janet. It's nothing to do with the forum database, this is on the server itself, I think it's a higher ban list than the board one, one that resides with the ISP. I'm sure you check the forum's ban list before for Alex's IP and it wasn't there.
There was a time when the host put everyone who typed their password in wrong on an ISP-level ban list at one time, hence my above!