Nero Corruption Bug

Hi all, i need a little help :slight_smile:
My configuration:
P3 866 with 768mb ram pc133
asus cuv4x (Last bios v1009)
liteon ldw811s (Last firmware HS0P)
WinXP pro SP1

Nero Ultra edition

I have got some philips DVD+R (4x certified) (25 stock pack) and i have got this error: data corruption(red block under dvd speed test) after 50% of the disc.
I have made all test possible and i think is a nero problem, because that problem doesn’t affect when i burn DVD+RW (4x certified) always by Philps.

i have test the ram too and all went good.
The problem seems to be random, i mean that i have burned some DVD+R and process went good.

It’s a nero problem? can anyone help me? i cant understand what’s going on… Thx a lot for help !