Crash (power fail) partway through upgrade from Ubuntu 10.10 to Mythbuntu 11.04...
Re-ran the upgrade again from the Mythbuntu 11.04 CD.
Unfortunately this left upstart b0rked.
'Fake' initctl was left in place - presumably as a vestige of the (failed) upgrade.
Attempt to start mysql server failed with 'fake initctl' complaint.
Searched unsuccessfully for fix in Ubuntu forums.
Seems to be fixed now with:
#apt-get install upstart --reinstall
seems to work OK.