Ubuntu 12.04 password safe 0.91
While writing some tickets, I had pwsafe and it's builtin help open (to try out some stuff in parallel, to read the help).
Didn't use it for a while, so I think something automatically closed the pw db.
That's ok, BUT: you can't close the help or main program window any more afterwards, it just hangs. UI is completely unresponsive in both windows.
killall worked. :D