I've got an odd problem...

I have a user on my site who was harassing other users. I banned the user, but he was still able to send threatening private messages to users. I banned his IP through the XOOPS interface, but somehow, he is still able to get on the site and post. I've checked and he is still using the same IP he's always used, it doesn't seem to be one of the random ones.

What should I do? I'm so frustrated. :S

Is there a way to stop a member from PMing other members? Is there another way to ban an IP?

Install Protector and ban his IP there.