The ND-3500 doesn't packet write with dvd+rw's and InCD. The drive seems to be OK with bulk writing and other tasks.
I tried an older BTC DVDRW1008 in the same computer and setup and it did just fine with the packet writing stuff.
I've bumped the Nec ND-3500 firmware to the latest, 2.19. But no change.
Any Ideas?