Last modified: 2009-03-15 13:08:32 UTC
It appears that even if an IP is blocked with "account creation blocked", a registered user can create a new user using Special:Userlogin/signup regardless of the block and their user rights. They still can't edit, but this can be disruptive.
I just tried this on my local wiki and I can't reproduce, it gives me the usual: 'Account creation from this IP address (xxx.xxx.xxx.xxx) has been blocked by OverlordQ.' This is while logged in as a normal user.
nvm, that's indeed not the loophole that is being used. I'll try to find out how an user was able to do this and will open a new bug