I have the same situation with my Lite-On LDW 411s fw: FS0K with Maxell 8x DVD-R - MXL RG03 (Made in Japan). Discs are rated at 1x-2x-4x-8x yet will only burn at 2x. DMA is enabled, drive is master on secondary IDE channel w/80 conductor cable. Nero CD-DVD Speed says that is the speed “with this recorder”. The burns I have done have been of good quality and play in my Toshiba and Magnavox DVD players. Hopefully Lite-On will correct this in another firmware upgrade…though as time goes by that may not happen…maybe time to buy a new drive… 
OS: Win XP Home SP2
MoBo: Gigabyte GA-8IPE1000Pro-G
CPU: Intel P4 3.0E
Memory: Crucial 512 MB x2
Graphics: eVga 5700LE 256 MB
Hardrive: Seagate 40 GB
CD-Burner: Sony CD-RW CRX 215E
DVD-Burner: Lite-On DVDRW LDW-411s
Network: D-Link DWL-G510 Wireless & DI-524 Router