ldtpd hangs sometimes when importing ldtp module

Binary package hint: ldtp

In Ubuntu 10.04, when I import ldtp module, I get a connection refused error.
After two or three attempts the module is correctly imported.

This is happening with ldtp 2.0.4.

In [1]: import ldtp

** (-c:4829): WARNING **: Trying to register gtype 'WnckWindowState' as enum
when in fact it is of type 'GFlags'

** (-c:4829): WARNING **: Trying to register gtype 'WnckWindowActions' as enum
when in fact it is of type 'GFlags'

** (-c:4829): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask'
as enum when in fact it is of type 'GFlags'
---------------------------------------------------------------------------
error Traceback (most recent call last)

/home/ara/curro/mago/trunk2/<ipython console> in <module>()

/usr/lib/pymodules/python2.6/ldtp/__init__.py in <module>()
    255 return None
    256
--> 257 _populateNamespace(globals())
    258 _pollEvents = PollEvents()
    259 thread.start_new_thread(_pollEvents.run, ())

/usr/lib/pymodules/python2.6/ldtp/__init__.py in _populateNamespace(d)
     58
     59 def _populateNamespace(d):
---> 60 for method in client._client.system.listMethods():
     61 if method.startswith('system.'):
     62 continue

/usr/lib/python2.6/xmlrpclib.pyc in __call__(self, *args)
   1197 return _Method(self.__send, "%s.%s" % (self.__name, name))
   1198 def __call__(self, *args):
-> 1199 return self.__send(self.__name, args)
   1200
   1201 ##

/usr/lib/python2.6/xmlrpclib.pyc in __request(self, methodname, params)
   1487 self.__handler,
   1488 request,
-> 1489 verbose=self.__verbose
   1490 )
   1491

/usr/lib/pymodules/python2.6/ldtp/client.pyc in request(self, host, handler,
request_body, verbose)
     59 # Retry connecting again

     60 return xmlrpclib.Transport.request(
---> 61 self, host, handler, request_body, verbose=0)
     62 raise
     63 except xmlrpclib.Fault, e:

/usr/lib/python2.6/xmlrpclib.pyc in request(self, host, handler, request_body,
verbose)
   1233 self.send_host(h, host)
   1234 self.send_user_agent(h)
-> 1235 self.send_content(h, request_body)
   1236
   1237 errcode, errmsg, headers = h.getreply()

/usr/lib/python2.6/xmlrpclib.pyc in send_content(self, connection,
request_body)
   1347 connection.putheader("Content-Type", "text/xml")
   1348 connection.putheader("Content-Length", str(len(request_body)))
-> 1349 connection.endheaders()
   1350 if request_body:
   1351 connection.send(request_body)

/usr/lib/python2.6/httplib.pyc in endheaders(self)
    902 raise CannotSendHeader()
    903
--> 904 self._send_output()
    905
    906 def request(self, method, url, body=None, headers={}):

/usr/lib/python2.6/httplib.pyc in _send_output(self)
    774 msg = "\r\n".join(self._buffer)
    775 del self._buffer[:]
--> 776 self.send(msg)
    777
    778 def putrequest(self, method, url, skip_host=0,
skip_accept_encoding=0):

/usr/lib/python2.6/httplib.pyc in send(self, str)
    733 if self.sock is None:
    734 if self.auto_open:
--> 735 self.connect()
    736 else:
    737 raise NotConnected()

/usr/lib/python2.6/httplib.pyc in connect(self)
    714 """Connect to the host and port specified in __init__."""
    715 self.sock = socket.create_connection((self.host,self.port),
--> 716 self.timeout)
    717
    718 if self._tunnel_host:

/usr/lib/python2.6/socket.pyc in create_connection(address, timeout)
    510 except error, msg:
    511 if sock is not None:
    512 sock.close()
    513
--> 514 raise error, msg

error: [Errno 111] Connection refused

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: ldtp 2.0.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-17-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CheckboxSubmission: a08fd14ff73f03f0a48f9e6d0af6c8e2
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
Date: Tue Mar 30 08:52:07 2010
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: ldtp