Comment 7 for bug 332736

Are you allowing it to re-use your home directory?
Did you run mythtv-setup before or after the reboot?

I'm still struggling to find the exact option that would cause this. Unfortunately the bug can lie anywhere in:
ubiquity, mythbuntu-common, mythbuntu-lirc-generator

The website is temporarily down. Please grab ISOs from http://cdimages.ubuntu.com/mythbuntu for now. There hasn't been any recent activity that should change "this" bug's behavior however from the last one you tested.

The syslog gets stored in /var/log/installer/syslog on the finished system.