Forum:Wiki for popular show being vandalized while last admin login was over a month ago. Help

The wiki for the fox show Glee is being vandalized by someone who keeps replacing entire pages with rickroll videos. As I've stated, I've checked and the last admin that logged in, logged in over a month ago. What do I do? http://glee.wikia.com/wiki/Glee_TV_Show_Wiki
 * Special:ListUsers is out of date, local admins are more active than it appears. Contact a local admin for help. -- 21:44, October 11, 2010 (UTC)

Yeah, like Pcj said, ListUsers is broken. You can click on the link to their contributions to see when they edited last. - Brandon Rhea (talk) 21:50, October 11, 2010 (UTC)