Tweaking MythTV settings

• MythBuntu's MythTV did not set the bookmark when exiting playback by default, so if I returned to a program, it would always start at the beginning. Fixed the setting in the frontend setup, Playback, page 2: On exit (change from "Just Exit" to "Save position and exit").
  
  
• De-interlacing: displaying an interlaced signal on a progressive-scan display creates really distracting horizontal artifacts in scenes with a lot of motion. To fix this, I went to the Utilities/Setup menu in the frontend, under Setup, TV Settings, Playback. Then go to Page 3.
  
  There you will see a combobox labeled Current Video Playback Profile; set it to Normal (it was "CPU+" by default on my machine). The Normal profile includes reasonable de-interlacing algorithms which work fine for me. You can also hand-edit any of the profiles, including at least half a dozen different de-interlacing options. Ah, Linux!