UnknownMethod GetProperties on interface org.laptop.Sugar.Presence.Buddy

[carrott]

** (sugar-session:2768): DEBUG: Client '0xa59be30 [sugar-activity 104dece427cce41ee812814963845964100000027680008]' received SaveYourselfDone(success = True)
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/sugar/presence/presenceservice.py", line 203, in _emit_buddy_appeared_signal
    self.emit('buddy-appeared', self._new_object(object_path))
  File "/usr/lib/python2.6/site-packages/sugar/presence/presenceservice.py", line 177, in _new_object
    self._del_object, object_path)
  File "/usr/lib/python2.6/site-packages/sugar/presence/buddy.py", line 96, in __init__
    self._properties = self._get_properties_helper()
  File "/usr/lib/python2.6/site-packages/sugar/presence/buddy.py", line 112, in _get_properties_helper
    props = self._buddy.GetProperties(byte_arrays=True)
  File "/usr/lib/python2.6/site-packages/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/python2.6/site-packages/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/python2.6/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.UnknownMethod: Method "GetProperties" with signature "" on interface "org.laptop.Sugar.Presence.Buddy" doesn't exist

** (sugar-session:2768): DEBUG: ice_io_error_handler (0xa358288)

I saw this in Samoa with os300py on XO-1, and I think it was related to a sharing or presence faults -- we had a number of occasions where one laptop would not show up in the neighborhood view. See attached log for more context, hopefully the stacktrace is enough to work out what is going on.

There is also this near the end of the log which might be related or might deserve it's own ticket:

** (sugar-session:2768): DEBUG: xsmp_finalize (0xa375cf0 [sugar-activity 104dece427cce41ee8128149756690622800000027680012])
1281497614.389639 ERROR root: set_active() failed: org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
1281497622.675551 ERROR root: Error getting the active access point: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

** (sugar-session:2768): DEBUG: ice_io_error_handler (0xa04c3c8)

[dnarvaez]

Very old, not reproducable.