A new update to MediaWiki was released today. It goes from 1.5.x to 1.6.0. There are a few new feature's, including a CAPTCHA extension (so those spam bots can't create accounts).
They are on 1.6.2 now. If Jordan does upgrade, I am sure it might take him a few hours. He has to update his skin because they modified the way skins are put together in the new version of MW.
