Tested first with gnome-applets 2.26.0-0ubuntu4, and confirmed the crash still occurred.
Upgraded to gnome-applets 2.26.1-0ubuntu1 from jaunty-proposed, reloaded the applet, and choosing "Play DVD" correctly opened totem and started playing my DVD.
Tested first with gnome-applets 2.26.0-0ubuntu4, and confirmed the crash still occurred.
Upgraded to gnome-applets 2.26.1-0ubuntu1 from jaunty-proposed, reloaded the applet, and choosing "Play DVD" correctly opened totem and started playing my DVD.