I have the same burner....and I've also experienced the same problem.
What software are you using? I use Nero Burning Rom...I think it has to do with the settings.
When I first got the burner I would back up some files...then try the dvd in my desktop and laptop...both would show no files.
I haven't had the problem since. Here are my settings.
No Multisession
Joliet unchecked
(I think the first one or two are the ones that solved it)
(more settings)
ISO 9660
ISO Level 2
all "Relax ISO Restrictions" unchecked.
The problem could also be with your media...the first spindle I used had this problem where the purple dye was pooled or dripped across some of the information tracks (problem in manufacturing - looks like a person took a purple marker and made a line from the beg. of the cd hole outwards for a cm or 2)
hope that helped
