Upgrade to Mythbuntu

I took a shot at installing Mythbuntu over a working but dead-end custom Debian installation. A few helpful remarks:
  • When configuring tv-out during installation I forgot it is normal when getting no signal on the monitor after the reboot of the first installation. So choose recovery boot option and select the option to repair x when given a choice.
  • Mythbuntu's partition wizard automatically sets the xfs filesystem for the recordings. This give me stuttering playback while recording. Changing it to ext3 like it was on my old installation fixed this (I have no idea what caused this).