Traceback (most recent call last):
  File "/usr/bin/gwibber-service", line 64, in <module>
    if "com.Gwibber.Connection" in dbus.SessionBus().list_names():
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 219, in __new__
    mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/_dbus.py", line 108, in __new__
    bus = BusConnection.__new__(subclass, bus_type, mainloop=mainloop)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 125, in __new__
    bus = cls._new_for_bus(address_or_type, mainloop=mainloop)
DBusException: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-H2tQHKf506: Connection refused