I have had goood results backing up numerous DVD movies using DVD Shrink 3.2, Nero 188.8.131.52 on my Dell D800 with integrated DVD writer and some different DVD+R media such as Maxel, BenQ. For my last 2 back ups I used (for the first time) Mitsumi DVD+Rs and the burns seemd to work OK (got the burn completed dialog from Nero/Shrink and the DVD ejected). However when I tried to play the new DVDs they weren't even recognized by my DVD writer. NeroInfo reports them as "Open, not finalized". How do I finalize the DVDs and why did these 2 backups not work - is there a problem with the Mitsumi DVD+Rs?