Comment 2 for bug 811026

StacktraceTop:
 _dbus_marshal_read_basic (str=0x1a4f638, pos=0, type=117, value=0x7fffff4ed46c, byte_order=255, new_pos=0x0) at ../../dbus/dbus-marshal-basic.c:549
 _dbus_header_get_field_basic (header=0x1a4f638, field=<value optimized out>, type=<value optimized out>, value=<value optimized out>) at ../../dbus/dbus-marshal-header.c:1342
 dbus_message_get_reply_serial (message=<value optimized out>) at ../../dbus/dbus-message.c:1030
 _dbus_connection_queue_received_message_link (connection=0x1a52570, link=0x1ac6f98) at ../../dbus/dbus-connection.c:478
 _dbus_transport_queue_messages (transport=0x1aae3d0) at ../../dbus/dbus-transport.c:1148