Comment 1 for bug 421353

Last I checked, this is only an issue on non-standard environments that don't provide a long-running D-Bus daemon. Launching a daemon late in the game is likely to have unpredictable results, and may lead to multiple session buses in the same logical user session.

If it's causing a lot of difficulty, I guess the feature could be implemented using the daemon functionality now, but it's difficult to see the use case. Can you give some more details about your setup?

Note that "autolaunch:" isn't mentioned anywhere in the spec: http://dbus.freedesktop.org/doc/dbus-specification.html