Slow burning on BOTH BURNERS! Nec 1100a, Iomega Dual DVD

[snek11]

Both of these burners should be burning at 4x. I'm using Imation 4x media, though I've tried other 4x media as well. In CopytoDVD it always sets it to 2.0x mode. In Nero it says it's burning 4x, but it's not!

It takes me 17 minutes to burn a 3 gig dvd, not even a full one.

NEC 1100a Firmware 1.A0
IOMEGA DVDRW4216 Firmware 1.21

I'm running XP, 2.4g, 512 ram.
Each drive is on it's own IDE channel. In device manager for one IDE channel it lists current transfer at UDMA 4, the other at UDMA 5. I've just restored a clean ghost image.

Any ideas here?

[snek11]

Did I not supply enough information? If there is something else I should post to get an answer let me know. Thanks.