Suggestion: clean up the forums :

[iGuest 3]

I don't know. But let me be mod or admin or whatever for a while and I'll do it myself, then revoke my status and become normal Gohst again. You probably don't have the ability to change me though, do you? If not thats OK...

[iGuest 3]

is there any fast way to remove all of them..?

I quote from another forum:

 

To delete 0 posters, however, you just do something like this:

"DELETE FROM `phpbb_users` WHERE `postcount`='0';"

 

Where phpbb_users is your phpbb user table, and postcount is the actual column for post count(which I don't know offhand).

Do it in phpmyadmin.

 

OR,

 

http://phpbbhacks.com/download/1427

This hack will search for users who are in-active or do not visit very much and delete them. The administrator can define the number of days before deletion happens.

 

http://phpbbhacks.com/download/346

This script will allow you to delete inactive users for your forum. It features many variables including days since registered, never logged in, etc.

 

http://phpbbhacks.com/download/1866

This hack allows you to check how many users who have never been activated and it makes you choose whether to contact them or to delete them.

 

It will only work if you have enabled account activation on your forums (user or admin).