I just received my LITEON 812S from newegg.
It came with f/w version us01, with a mfg date of 1/16/04.
I tested it with a 4X +R from newegg (RICOHJPNR01),
which I had already used with the LITEON 451s@851s,
which burned it at 8X with bookmarking set to dvd-rom.
This new 812S, at f/w us01, only burns these same
disks at 4X (same burning tool - recordnow max 4.5).
I ran the bookmark tool beforehand, like always,
and it seemed to indicate that it succeeded, but,
dvdinfopro reported the bookmark type as "Unkonwn",
where, dvdinfopro reports the bookmark type
for the same disc type burned with the
451s@851s as "dvd-rom".
SOoooo, it looks like the 812S is a step backwards
from the 451s@851S, at least with these 4x Ricoh
+R discs, and at the pre-installed f/w or us01.
I will be looking into f/w upgrades and all, but,
these are my initial observations.