Fred,
I must have missed it, but I see gksu and run-as-user seem to be replaced by ddliveapp.
Is there some documentation on ddliveapp and what it does etc? How does it relate to bill's scripts with guest user, if at all?
(I think this might have been the source of some of my vlc/bluetooth issues earlier, but that's working now so I'm not going to mess with it.)