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…

DMA