It appears to have been intentionally removed: https://lists.ubuntu.com/archives/ubuntu- desktop/2011-January/002734.html
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/705123 Title: Options tab missing from Startup Programs prefs dialog -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
