I have just installed wpmu and think it is very good. I am still having problems that I can't manage to sort out i.e. no emails for new user, .making a blog in admin for another user puts that user in the admins blog, and so on.
I have searched the forums and everybody is getting the same problems,
With all the coding guru's on the forum can't some of you get together, and make a trouble free no more bugs version of all the php files that have to go into the root directory, so that the troublesome ones can be overwrote, as I think a lot of people on the forum are like me, when it comes to php coding we haven't got a clue.
I am not on about the virtual host stuff and subdomains, a good hosting service can sort that side out.
Think about it, put your heads together and make wpmu what it is intended to be,the best multi blogging system on the net.