thin hangs when you restart when there is no PID

This may be a bit of a strange case, but i'm using version 0.80 and if
i don't have a running thin process and try to do a restart, the
process currently hangs.

If I execute these commands, the terminal output 'Can't stop
process...' is the last thing I see, ie I never get the cursor back.

[dereky@thin]$ sudo thin stop -d -C /etc/thin/back_end.conf Sending QUIT signal to process 2046 ...
[dereky@thin]$ sudo thin restart -d -C /etc/thin/back_end.conf Can't stop process, no PID found in tmp/pids/thin.pid

I can see that this still running by in another window on the same
box..
ps -ef | grep thin
root 2060 1971 99 16:05 pts/0 00:02:43 ruby /usr/bin/thin
restart -d -C /etc/thin/back_end.conf

Has anyone else seen this? My fear is that if someone issues a
capistrano stop then a restart, or we do a restart on an idle server,
it won't start up cleanly which is what I really want.

Workaround pointed out:
As a workaround you can force thin to cluster mode by specify -s1
option or "servers: 1" in your config file.