Yesterday I burned my first DL+R Verbatim (MKM001) on my new 165H6S. The result was quite good @4X but I am unable to to change the booktype to DVD-ROM. The option is greyed out and DVD+R DL is stuck as default. The drive is on an external firewire connection. One other thing; when I attempt to change the booktype on the latest version on cd/dvd speed 4.60 or use the feature in Kprobe my system freezes and I have to re-boot. Any possible solutions out there?