@peterdrake kill -9 ?
You can try specifying the signal to send (man signal), e.g.,
kill -s KILL
Also, use the "f" option in ps to show processes as a tree to ID the parent process, e.g.,
ps axf
@peterdrake Check out the "pgrep" and "pkill" commands - you can probably just do a "pkill unity" to take them all out at once.
Wow! I think I found the offending process, but kill doesn't kill it! (It quietly does nothing.) Same story for killall and System Monitor.
Hard reboot incoming!