My username is "andreasm", I am admin and I have Id 1 in my forums.

But somebody also posted with Id 1 into my forums with username "ttoothh". And he is NOT registered. How is this possible?

see here:
[...cut...]

I use newest version 2.0.3 of minibb.

What have you did with your board so usernames are displayed this way? It doesn't seem to be a default modification. I see that ALL guests in this thread are displayed like their ID would be 1.

Probably it's your own modification bug?..

I wanted to make it possible to click on a username and see userinfo. But I forgot that guests don't have an userinfo page...

Perhaps I must first check if postet is a guest or not.. but I don't know how to do this.

The conditions are:

if($user_id==0) --> Guest
if($user_id==1) --> Admin
if($user_id>0) --> Member