I just tried to copy a copy of a movie I burnt years ago (Caddyshack) and had problems reading the info from the disk using multiple copy programs: Nero, Roxio EZ Media, Ulead DVD MovieFactory, CloneDVD, among others. I finally got it using my old DVDXRescue - thank goodness I didn't delete it. I was getting CRC read errors, even though the surface was clean and the copy was previously OK. My question: What is the longevity of DVD recording media? The disk is a Verbatim DVD+R. Do I have to worry that my DVD backups are degrading in their cases as I go about my daily business?