First challenge is getting the Hauppauge tuner card working with Linux - these are the instructions that worked for us however rather than "make menuconfig" you have to do "sudo make menuconfig" to avoid permissions problems.
Then the issue of the mythtv-backend not starting on boot, fixed by running:
sudo update-rc.d mythtv-backend defaults 50 51
Mapping channels described here
Channels 9 and SBS use MPEG, not DVB, so whrn you add the channels, add them as MPEG, and they (mainly) work. Glenn reports that there are some issues with HD, but if you go to SD first, it then finds the HD