Win XP, using Nero Express (I know, I know... I'm gonna get a real version soon). When I go to burn a DVD-R, I notice that burn-proof (buffer underrun, whatever you want to call it), is not enabled. The drive does support it, right?
512 MB RAM... some other programs running at the same time (not doing much, just open)... what could the problem be?
DMA is enabled on both primary and secondary ("if available").
Found this thread that helped a bit.