[Christian_]

Hi kazzer,

what do you mean by banned? Did you just ban their accounts or did you delete them? In waht way are they back? Are they still showing as being online, or did they re-register at the forum?

While IP blacklisting is a good feature, I wouldn't necessarily do it in VBulletin itself. If you do have a root server, block these IP addresses in your system's firewall (IPTABLES). This way packets from banned IP addresses never make it up all the way of your network stack, and they won't be delivered to the VBulletin application, that would discard them at this point in time.

If you have IPTABLES, enter this
iptables -A INPUT -s xxx.xxx.xxx.xxx/yy -j DROP
where xxx is the IP address and yy is the subnet mask in CIDR notation.