IP Banning problem

[Rat1972]

I know that, on my other boards it works perfect. But on that board, the member can still access the forum. When i go to my other vbulletinforums and i go to my banningoption and i'll put an ip adress in it and save it, then the person is banned. I tried also with my ipadress, and i couldnt also access the forum, i had to remove it from my MYSQL to go on my forum again. But when i do that to my other board, nothing happens. The person can still acess the forum (until he has a nickban, but he can make a new account, and i have no time to go moderate all users.)

Strange... I run for a few years vbulletin, this is the first board i have problems with this.
Maybe i do a reinstall and then i'll put back the topics, users and forums. Maybe then it will be solved, but i thought maybe there is a easyer way.

thanks for thinking and helping me.