Nightlies build failure in lucid

[Natalia Bidart]

[ERROR]: ubuntu_sso.tests.test_account.AccountTestCase.test_generate_captcha

Traceback (most recent call last):
  File "/build/buildd/ubuntu-sso-client-1.3.3+r772/ubuntu_sso/tests/test_account.py", line 169, in test_generate_captcha
    captcha_id = self.processor.generate_captcha(filename)
  File "/build/buildd/ubuntu-sso-client-1.3.3+r772/ubuntu_sso/account.py", line 120, in generate_captcha
    res = urllib2.urlopen(captcha['image_url'])
  File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib/python2.6/urllib2.py", line 391, in open
    response = self._open(req, data)
  File "/usr/lib/python2.6/urllib2.py", line 409, in _open
    '_open', req)
  File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.6/urllib2.py", line 1255, in file_open
    return self.parent.open(req)
  File "/usr/lib/python2.6/urllib2.py", line 391, in open
    response = self._open(req, data)
  File "/usr/lib/python2.6/urllib2.py", line 409, in _open
    '_open', req)
  File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.6/urllib2.py", line 1331, in ftp_open
    fw = self.connect_ftp(user, passwd, host, port, dirs, req.timeout)
  File "/usr/lib/python2.6/urllib2.py", line 1352, in connect_ftp
    fw = ftpwrapper(user, passwd, host, port, dirs, timeout)
  File "/usr/lib/python2.6/urllib.py", line 854, in __init__
    self.init()
  File "/usr/lib/python2.6/urllib.py", line 860, in init
    self.ftp.connect(self.host, self.port, self.timeout)
  File "/usr/lib/python2.6/ftplib.py", line 131, in connect
    self.sock = socket.create_connection((self.host, self.port), self.timeout)
  File "/usr/lib/python2.6/socket.py", line 514, in create_connection
    raise error, msg
urllib2.URLError: <urlopen error ftp error: [Errno 111] Connection refused>