The systemprofiler on my Quicksilver G4 shows I have a Pioneer DVD 108 drive installed and Disk burning shows (among others) +R DL. I assume that means I can burn Dual Layer +DVD disks? If so that would make backing up Dual Layer disks, like the Leopard install disk much easier. Any info available? Sorry about my lack of knowledge in this field, I know almost nothing about video or DVD technology.