Redirection problem

I have WordPress MU with Buddypress 1.1.2 installed. I added the domain mapping plugin 1.0.3.

I’ve added three domains for blogs and they all seem to be working fine. (You can try one at:

The problem we are having now is with the main domain If you click on the links to any post other than the most current post, they all re-direct back to root.

Any ideas of where I should look to resolve this issue?