Traceback (most recent call last):
  File "/usr/lib/ubuntuone-client/ubuntuone-syncdaemon", line 160, in <module>
    main(sys.argv)
  File "/usr/lib/ubuntuone-client/ubuntuone-syncdaemon", line 130, in main
    realm=options.realm, mark_interval=options.mark_interval)
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/main.py", line 66, in __init__
    self.vm = volume_manager.VolumeManager(self)
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/volume_manager.py", line 126, in __init__
    upgrade_method(md_version)
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/volume_manager.py", line 496, in _upgrade_metadata_2
    names[pos] = new_name
  File "/usr/lib/python2.6/contextlib.py", line 34, in __exit__
    self.gen.throw(type, value, traceback)
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/volume_manager.py", line 512, in allow_writes
    yield
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/volume_manager.py", line 495, in _upgrade_metadata_2
    os.path.join(dirpath, new_name))
OSError: [Errno 39] Directory not empty