I disagree, although it is completely possible it *IS* the media, it is much more likely that DMA is not enabled for the drive. Try taking a look at your device manager for your ATAPI/IDE ATA devices (in Win2000 or WinXP) or your HDD properties (in Win98 or WinME) and see if your drive is set to DMA or PIO. You want it to be DMA.
Of course, I've been in situations where my computer was running completely barebones, fresh install of windows, DMA enabled, and everything set EXACTLY as it should be, and I've STILL had Nero screw up and say my HDD was too slow and mess up my burns, or have BurnProof kick in. So sometimes I think it is just Nero's fault... although Nero 6 has yet to do this to me
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media