launchpad plugin gives traceback on XML-RPC connection failure (error 10060: operation timed out)

From Windows XPSP2, bazaar from self-contained installer - happens w/ both bzr 1.6.1 and 1.7.1 (I tried an upgrade first), and with both windows cmd shell, or cygwin bash shell (they both pull the same path / same bzr):

-------------------------------------------

/cygdrive/d/Workspace
$ bzr branch lp:ipython
bzr: ERROR: socket.error: (10060, 'Operation timed out')

Traceback (most recent call last):
  File "bzrlib\commands.pyo", line 857, in run_bzr_catch_errors
  File "bzrlib\commands.pyo", line 797, in run_bzr
  File "bzrlib\commands.pyo", line 499, in run_argv_aliases
  File "bzrlib\builtins.pyo", line 853, in run
  File "bzrlib\bzrdir.pyo", line 894, in open_tree_or_branch
  File "bzrlib\bzrdir.pyo", line 771, in open
  File "bzrlib\lazy_import.pyo", line 125, in __call__
  File "bzrlib\transport\__init__.pyo", line 1527, in get_transport
  File "bzrlib\directory_service.pyo", line 53, in dereference
  File "D:/Program Files/Bazaar/plugins\launchpad\lp_directory.py", line 60, in
look_up
  File "D:/Program Files/Bazaar/plugins\launchpad\lp_directory.py", line 76, in
_resolve
  File "D:/Program Files/Bazaar/plugins\launchpad\lp_registration.py", line 182,
 in submit
  File "D:/Program Files/Bazaar/plugins\launchpad\lp_registration.py", line 147,
 in send_request
  File "xmlrpclib.pyo", line 1147, in __call__
  File "xmlrpclib.pyo", line 1437, in __request
  File "xmlrpclib.pyo", line 1183, in request
  File "xmlrpclib.pyo", line 1297, in send_content
  File "httplib.pyo", line 860, in endheaders
  File "httplib.pyo", line 732, in _send_output
  File "httplib.pyo", line 699, in send
  File "httplib.pyo", line 1134, in connect
  File "<string>", line 1, in connect
error: (10060, 'Operation timed out')

bzr 1.7.1 on python 2.5.2 (win32)
arguments: ['d:\\Program Files\\bazaar\\bzr.exe', 'branch', 'lp:ipython']
encoding: 'cp1252', fsenc: 'mbcs', lang: None
plugins:
  bzrtools D:\Program Files\bazaar\plugins\bzrtools [1.7.0]
  launchpad D:\Program Files\bazaar\plugins\launchpad [unknown]
  qbzr D:\Program Files\bazaar\plugins\qbzr [0.9.4]
  svn D:\Program Files\bazaar\plugins\svn [0.4.13]
*** Bazaar has encountered an internal error.
    Please report a bug at https://bugs.launchpad.net/bzr/+filebug
    including this traceback, and a description of what you
    were doing when the error occurred.
/cygdrive/d/Workspace
$ which bzr
/cygdrive/d/Program Files/bazaar/bzr

/cygdrive/d/Workspace
$ bzr --version
Bazaar (bzr) 1.7.1
  Python interpreter: d:\Program Files\bazaar\python25.dll 2.5.2
  Python standard library: d:\Program Files\bazaar\lib\library.zip
  bzrlib: d:\Program Files\bazaar\lib\library.zip\bzrlib
  Bazaar configuration: D:\Profiles\cyt007\Application Data\bazaar\2.0
  Bazaar log file: D:\Profiles\cyt007\My Documents\.bzr.log

Copyright 2005, 2006, 2007, 2008 Canonical Ltd.
http://bazaar-vcs.org/

bzr comes with ABSOLUTELY NO WARRANTY. bzr is free software, and
you may use, modify and redistribute it under the terms of the GNU
General Public License version 2 or later.

/cygdrive/d/Workspace
$

------------------------------------------------------
FYI, not trying to reference by "lp:" works, eg:

  D:\Workspace\ipy>bzr branch http://bazaar.launchpad.net/~ipython-dev/ipython/trunk
  Branched 1147 revision(s).

so this really seems just like an issue of how bzr responds to network timeouts.

Regards,
Yarko