I've upgraded moin for security reasons and feature reasons. It was quite a jump so there may be a few bugs to iron out yet.
Normal service will resume as soon as you all report all the bugs.
Due to the upgrade you should now set a password in order to login via UserPreferences as the uid thing is going away.
People with ACLs will want to get their old username back - I'm informed that this shoudl just work but if not then the best way is to ask SimonHuggins for your uid on IRC or by mail or something. Then visit http://wiki.earth.li/?action=userform&uid=nnnnn where nnnnn is your uid (well it's longer than that but you get the idea.
If you bookmarked the link from before then it should still work.
Send hot CSS/theme here.