Could you could just add an option to only fill buffer every n seconds or pause filling every n for n. This would probably allow 4+ intances at once, big grin.
The best random access I could get using one logical disk on the cheap was using raid off a sil680 card with the strip set to .5M and the drive formated with 2k allocation units. It was nice to find that out, however, it would be nicer to have imgburn pause, as then random access is not so heavy duty (and we can have one huge mother of a drive, ahaha).
