Description of problem: Please update to the latest version of dvd+rw-tools available. Here's part of an email I received from the author, Andy Polyakov: "FYI. 5.20.x features DVD+R Double Layer. Public announcement is at http://lists.debian.org/cdwrite/2004/07/msg00083.html, closest feature plan is at http://lists.debian.org/cdwrite/2004/07/msg00102.html."
Internal RFE bug #128254 entered; will be considered for future releases.