If this turns out to have anything to do with Bug #1314782, then the issue lies not in D-Bus but in Ubuntu patches to GTK+ conflicting with Xubuntu patches to XFCE apps (or possibly with the apps originally). I don't remember the exact details but whoever triages/investigates this should get in touch with the Xubuntu team.
If this turns out to have anything to do with Bug #1314782, then the issue lies not in D-Bus but in Ubuntu patches to GTK+ conflicting with Xubuntu patches to XFCE apps (or possibly with the apps originally). I don't remember the exact details but whoever triages/ investigates this should get in touch with the Xubuntu team.