Please report this to Nero Website. I already done it, but since you have another model Sony burner and having the same issue, then its something that needs looked into.
I did a complete, OS erase/reload last night (was due anyway) Nero will be the only burning app installed, so I will see if Alcohol was causing the problem.
My PC Specs:
Intel D865PERL MB w/built in sound, NIC, and USB 2.0
512 meg Kingston DDR400 RAM
Pentium 4 2.8Ghz 800FSB (Northwood core) with HT
Radeon 9600XT 128meg AGP(Cat 4.12 drivers)
80gig Seagate SATA HDD
Sony DVD-ROM/CD-RW model CRX320E
Sony DVD-RW model DW-D22A
Windows XP Pro SP2 and all new updates