I am keeping an eye out for you on IRC.
Something else that occurred to me; when I first installed the MD I was playing with different refresh rates and/or resolutions if I recall correctly. I wasn't happy with the selection, and found that I couldn't get the AVWizard to run from the orbiter button, or by holding shift during restart. Therefore I ran it with...
/usr/pluto/bin/AVWizard_Run.sh
I wonder if this has anything to do with it. Barney, have you run this command at any point?
Cheers,
Matt.