Test failure in trunk sync menu tests when looping

[dobey]

When running the tests in a loop with u1trial --loop N tests/platform/sync_menu/test_linux.py the following error occurs N-1 times:

[FAIL]
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 138, in maybeDeferred
    result = f(*args, **kw)
  File "/usr/lib/python2.7/dist-packages/twisted/internet/_utilspy3.py", line 41, in runWithWarningsSuppressed
    reraise(exc_info[1], exc_info[2])
  File "/usr/lib/python2.7/dist-packages/twisted/internet/_utilspy3.py", line 37, in runWithWarningsSuppressed
    result = f(*a, **kw)
  File "/home/dobey/Projects/canonical/ubuntuone-client/test/tests/platform/sync_menu/test_linux.py", line 450, in test_sync_status_changed
    self.assertNotIn('paused', self.sync_menu.app.data)
  File "/usr/lib/python2.7/dist-packages/twisted/trial/_synctest.py", line 433, in assertNotIn
    % (containee, container))
twisted.trial.unittest.FailTest: 'paused' in {'paused': True, 'connect': ('notify::paused', <bound method UbuntuOneSyncMenuLinux.change_sync_status of <ubuntuone.platform.sync_menu.linux.UbuntuOneSyncMenuLinux object at 0x3ec1c50>>), 'server': <Server object at 0x3ec8190 (DbusmenuServer at 0x44e0120)>}

tests.platform.sync_menu.test_linux.SyncMenuTestCase.test_sync_status_changed