I have used this setup a few times in the past with out any issues at all. Though the other day I reinstalled and have been getting the following error when starting the backend/retriviing channel line ups.
Session management error:
Authentication Rejected, reason : None of theauthentication protocols specifiedare supportedhost-basedauthentication failed
and After searching around for a few I came across one fix which led me to another fix. The problem is that MythTV was attempting to run as the Mythtv user, thats fine and dandy but I run mine as my user instead. So you have to change two files and the problems will be fixed. Here are the two files that need to be changed.
/etc/init.d/mythtv-backend
/etc/cron.daily/mythtv-backend
In those files you will see a spot right at the top where it is trying to run as the mythtv user, just replace mythtv with your name and then you should be all set.