dave@TheMightyWurlitzer:~$ sudo -u mythtv mythbackend -v all
Password:
Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed
2007-07-22 21:32:06.696 Using runtime prefix = /usr
2007-07-22 21:32:06.721 New DB connection, total: 1
2007-07-22 21:32:06.730 Unable to connect to database!
2007-07-22 21:32:06.731 Driver error was [1/1045]:
QMYSQL3: Unable to connect
Database error was:
Access denied for user 'mythtv'@'localhost' (using password: YES)

QSqlQuery::exec: database not open
QSqlQuery::exec: database not open
2007-07-22 21:32:06.790 DB Error (KickDatabase):
Query was:
SELECT NULL;
No error type from QSqlError?  Strange...
2007-07-22 21:32:06.850 Failed to init MythContext, exiting