An all-new, all-singing snapshot is now available. The mu website is going through some updating so you can download the files from here instead:
Hold off on downloading for a while. The SVN repository is down right now and the archives above are corrupted. I’ll post fixed files later. They’re fine now.
I rolled in a big patch by Dasher, including Derek Ditch’s wpmu manager. It also included BAStats so you have yet another way of telling where people come to your site from!
Lots of other fixes and additional features, check the change log for more.
Post questions to the support forum if you have problems.