PS: Andy, I guess I didn't make it clear in my original post but the system
was kernel panicing. Since I never was at console all those times, I never
had seen the actuall OOPs, but caps and scroll lock were flashing which told
me it was a kernel panic. After your comment, though, I scratched down the
OOPs dumped on console from burning a dvd-r. The same results occur when
mounting a badly burned dvd-r, for which I posted onto the lkml, if
interested. In either case, the cause was a failure in the ide-scsi reset
function. A hack fix was to just return SCSI_RESET_SNOOZE. The only problem
is that every 3rd or 4th burn's end the drive will stay stuck with its access
light on requiring a reboot to fix.. So, I'm sticking with ide-cd even if
it's horribly slow. And no, I don't expect a fix to be posted here. I'm
stating this information purely for completeness. Besides, Linus says
ide-scsi is a bad hack.
lkml post: http://www.ussg.iu.edu/hypermail/linux/kernel/0311.2/0073.html