Thought this might be of interest. http://portal.unesco.org/ci/fr/files/22734/11571181531CD_DVD_for_UNESCO_final_ _2006.pdf/CD%2BDVD%2Bfor%2BUNESCO%2Bfinal%2B%2B2006.pdf Risks Associated with the Use of Recordable CDs and DVDs as Reliable Storage Media in Archival Collections - Strategies and Alternatives By Kevin Bradley. National Library of Australia, Canberra Karl