[root@ip-10-245-174-225] ~ $ supervisorctl stop XXX
^CTraceback (most recent call last):
File "/usr/local/bin/supervisorctl", line 9, in
load_entry_point('supervisor==3.0a12', 'console_scripts', 'supervisorctl')()
File "/usr/local/lib/python2.6/dist-packages/supervisor/supervisorctl.py", line 1114, in main
c.onecmd(" ".join(options.args))
File "/usr/local/lib/python2.6/dist-packages/supervisor/supervisorctl.py", line 144, in onecmd
return do_func(arg)
File "/usr/local/lib/python2.6/dist-packages/supervisor/supervisorctl.py", line 732, in do_stop
result = supervisor.stopProcess(name)
File "/usr/lib/python2.6/xmlrpclib.py", line 1199, in call
return self.__send(self.__name, args)
File "/usr/lib/python2.6/xmlrpclib.py", line 1489, in __request
verbose=self.__verbose
File "/usr/local/lib/python2.6/dist-packages/supervisor/xmlrpc.py", line 463, in request
r = self.connection.getresponse()
File "/usr/lib/python2.6/httplib.py", line 990, in getresponse
response.begin()
File "/usr/lib/python2.6/httplib.py", line 391, in begin
version, status, reason = self._read_status()
File "/usr/lib/python2.6/httplib.py", line 349, in _read_status
line = self.fp.readline()
File "/usr/lib/python2.6/socket.py", line 427, in readline
data = recv(1)
KeyboardInterrupt

supervisorctl status show 'STOPPED' and the process does not exists.
The log file shows:
2012-06-19 14:31:08,722 INFO stopped: XXX (terminated by SIGTERM)

I can turn on more debugging if you need