It seems that earlier DVD recorders won't now be able to use the new higher speed rated blanks, (eg X4 and X6), and they can't be modified either, as I seem to be finding out. Any one have more on this ? , or are these earlier machines going to be stuck for blank media when everyone starts selling only the new high-speed rated blanks. Bad news if this is true.. Built in obsolescence springs to mind.. The packs have wording that states that firmware upgrades of earlier DVD recorders may be needed, but it does'nt seem that these upgrades are easily available - if at all. Any comments - people in the know ?