Thread:Project:Support desk/How to block already registered spam account

Hello, I would like to block the thousands of spam users in my mw (I already installed extensions to stop new spam account creation). The extension UserAdmin almost do what I want, enabling to list user, filter with regexp, select and block. Unfortunately when I click Block, it goes to the "Post" page, which doesn't exist.

So now what I would like is a way to select all this bad users, block them, and remove all their "contributions". I have access to DB, so a SQL command would do the trick as far as I'm concerned.