Comment 4 for bug 328575

I agree that we shouldn't support allowing another user to connect, but this is only part of the issue, and I don't think closing this as not a bug is the right answer.

If this error occurs libgconf or libdbus should automatically start a local session bus so that the user isn't left unable to get any GConf settings (maybe this is not the case, but it's certainly the impression with the error being reported).

To not auto-start a session is essentially a regression over the prior behaviour.