Problem with GSA-H10N

Hi all,
just purshased an LG GSA-H10N dvd writer not too long ago. When I burn a dvd (with nero disc-to-disc 16X) it takes about 1 hour for a full dvd!
I had a LG GAS-4160B before and if I remember right it used to take about 20 minutes for the same operation.
What I did is update the firmware to JL11 and I even tried another program (roxio) to see if it was not software realted and it took about the same time.
Anybody can help me with this?

Thanks for your help…