A long time ago (back when it existed), I installed wordpress-mu (multiuser) so I could host blogs for myself and other folks here at scrye.com. Then wordpress-mu merged back with wordpress and I kind of hacked it so it kept working.
Fast forward to today: A friend asked for a new blog, but I couldn’t login to the admin interface due to weird wordpress / wordpress-mu redirects and database issues.
So, I sat down, fixed up the database to point to wordpress only, fixed config and got everything working again.
So, hopefully everything is now nice and vanilla wordpress now and should work more smoothly for everyone (especially me).