We are new users of WordPress Mu 1.2.1 and the template (Regulus) that our most active blog is using has a problem with the posts_nav_link.
The problem is the older posts link at the bottom
doubles the link
(ie puts blogs/rmap in twice)
However, once someone is logged in, this is no longer a problem.
I have tried taking similar code from some of the other templates, but it still does the same thing. The templates all purport to be MU templates.
Does anyone have an idea where to look for the cause of the problem?