Comment 2 for bug 1046395

Exactly the same symptoms here, although the error messages are not 100% the same:

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Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1403, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1396, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1272, in main
    sync_archive(decrypt)
  File "/usr/bin/duplicity", line 1072, in sync_archive
    copy_to_local(fn)
  File "/usr/bin/duplicity", line 1013, in copy_to_local
    fileobj = globals.backend.get_fileobj_read(fn)
  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 550, in get_fileobj_read
    self.get(filename, tdp)
  File "/usr/lib/python2.7/dist-packages/duplicity/backend.py", line 323, in iterate
    return fn(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/duplicity/backends/u1backend.py", line 201, in get
    answer = auth.request(remote_full)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-couch/ubuntuone/couch/auth.py", line 152, in request
    url, method=http_method, headers=headers, body=request_body)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1444, in request
    (response, content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1196, in _request
    (response, content) = self._conn_request(conn, request_uri, method, body, headers)
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1132, in _conn_request
    conn.connect()
  File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 913, in connect
    raise SSLHandshakeError(e)
SSLHandshakeError: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed