This turns out to be the same as https://bugs.freedesktop.org/show_bug.cgi?id=15922 and https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/241619
This turns out to be the same as https:/ /bugs.freedeskt op.org/ show_bug. cgi?id= 15922 and https:/ /bugs.launchpad .net/ubuntu/ +source/ dbus/+bug/ 241619