Just upgraded to WPMU 2.6. All was appearing to work correctly until I tried to access the backend area for one of the user blogs. Instead of taking me to the wp-admin it redirects me to the login page with this URL:
After seeing this I asked a user to try to login and they are seeing the same behavior. Feel free to register to see the behavior in action.
If I manually type the backend url for a blog, such as:
http://blogs.joshandmeg.net/ryan/wp-admin
It just takes me to the main blog site admin area. So I effectively cannot get to the backend of the user blogs at all.
This was not happening pre-2.6 and I've searched and searched through the forums without any resolution.
Thanks