[mythtv-users] This account is currently not available.

[Michael J. Lynch]

<snip>

This means the account was created with an expiration date
on the account, a time limit on the password, or both.  To
disable the time limit of the password, as root do

usermod -f -1 mythtv

There is a similar command to disable account disabling based
on and expiration date but I don't recall off hand what it is.

-- 
Michael J. Lynch

What if the hokey pokey IS what it's all about -- author unknown