I got some RiData DVD+R DL blanks and can't get them burn both layers. I have a 2 month old Lite-On LH-18A1P IDE burner with the latest firmware (just flashed to GLOF) and Vista x86 Ultimate. When I let Vista's integrated CD/DVD burning format the disk, it takes much longer than it does with a single layer DVD or CD, and then its ready, it shows the disk as being 8.5 GB with 4.2 GB used and 4.2 GB available. I downloaded NTI CD&DVD Maker 7.7 (updated for Vista) and when I stick a blank in, it recognizes it as "DVD+R DL,1 track, Recordable, 4076.3 MB used, 4075.7 MB free". Pretty much the same deal as what Vista did on its own.