Comment 9 for bug 651088

Recently I've lost access to Ubuntu One through my Ubuntu 10.04.02. Terminal output looks very much the same as in Julien's case:

ubuntuone-preferences
Traceback (most recent call last):
  File "/usr/bin/ubuntuone-preferences", line 1143, in <module>
    prefs_dialog = UbuntuOneDialog()
  File "/usr/bin/ubuntuone-preferences", line 535, in __init__
    self.__construct()
  File "/usr/bin/ubuntuone-preferences", line 975, in __construct
    self.devices.list_devices()
  File "/usr/bin/ubuntuone-preferences", line 377, in list_devices
    token = get_access_token(self.keyring)
  File "/usr/bin/ubuntuone-preferences", line 124, in get_access_token
    'oauth-consumer-key': 'ubuntuone'})
gnomekeyring.BadArgumentsError

Hector's work around seemed to do the trick and ubuntu one preferences windows appeared but unfortunately I didn't manage to synchronize:

ubuntuone-preferences
Removing stale, deceptive pid file.
Apache CouchDB has started, time to relax.
Browse your desktop CouchDB at file:///home/mc/.local/share/desktop-couch/couchdb.html
ERROR:dbus.connection:Exception in handler for D-Bus signal:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 214, in maybe_handle_message
    self._handler(*args, **kwargs)
  File "/usr/bin/ubuntuone-preferences", line 1084, in got_newcredentials
    self.present()
  File "/usr/bin/ubuntuone-preferences", line 1075, in present
    self.dialog.request_quota_info()
  File "/usr/bin/ubuntuone-preferences", line 687, in request_quota_info
    callback=self.got_quota_info)
  File "/usr/bin/ubuntuone-preferences", line 170, in make_rest_request
    token = get_access_token(keyring)
  File "/usr/bin/ubuntuone-preferences", line 124, in get_access_token
    'oauth-consumer-key': 'ubuntuone'})
BadArgumentsError
ERROR:ubuntuone-preferences:Invalid request token: ML9......................................
ERROR:ubuntuone-preferences:Uwierzytelnienie się nie powiodło.
ERROR:ubuntuone-preferences:Invalid request token: ML9......................................
ERROR:ubuntuone-preferences:Uwierzytelnienie się nie powiodło.
ERROR:ubuntuone-preferences:[Failure instance: Traceback (failure with no frames): <class 'dbus.exceptions.DBusException'>: org.freedesktop.DBus.Python.KeyError: Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/dbus_interface.py", line 1313, in get_info
    mdobj = self.fs.get_by_path(path.encode('utf-8'))
  File "/usr/lib/python2.6/dist-packages/ubuntuone/syncdaemon/filesystem_manager.py", line 550, in get_by_path
    mdid = self._idx_path[path]
KeyError: '/home/mc/.ubuntuone/Purchased from Ubuntu One'

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