Comment 3 for bug 1018031

Thank you for your bug report, it was turned off upstream in that commit:
http://git.gnome.org/browse/gnome-session/commit/?id=84a733203e076142a960005eaf0ac602521470fb

"[session-properties] set NoDisplay=true for the session properties dialog
It doesn't really fit into the new System Settings design nor does it really make sense for a user to be able to turn off core desktop components like power management or networking. We'll likely redesign this to only show applications and include it in some other place in the System Settings."

Since we do patch those services to not show up in this dialog in might make sense to display it back in Ubuntu...