DrageMester - I will try your suggestion - tomorrow I will burn an image at 8X
(I usually burn images for my son - for his PS2 games, and I was always told that burning at lower speeds is better,
maybe this fact changed with the newer dvd burners).
The dvd I used was clean, I always check for dust before putting it in.
TYG03 is DVD-R, I remember that when I scanned this forum after getting my 812S,
I read that those older LiteOn's (including the 832S) prefer DVD+R to DVD-R, I did some tests and I remember that I saw significant changes between +R and -R (+R was much better).
I saw the kprobe and nero results for the 20A1P (from other folks), and it seems that this animal loves to eat DVD-R for breakfast as well, but maybe some DVD's are better then others. (Verbatim was laways decent, I also could not get any +R TY media, the Verbatim DVD+R is MCC and I prefered TY -R to MCC +R).
I have some original bulk TY YUDEN002 which I save for speacial purposes (I don't know what those are, but since it was so hard to come by original TY media here in Israel and also very expensive, I keep these dvd's like wine, older is better), so I'll
try those (they are 8X, so I'll try a 8X burn) and post the results.
Thanks for your great help