> The nutty app I was using for burning is Brasero, a GNOME app which does > some SG_IO directly with the drive. (I guess it has some bad error > handling and doesn't realise when some I/O path has failed) I would guess Brasero is issuing a command with the length of data wrongly set. In the old code that might well just produce errors of the "Umm wtf is this data left over for ?", with the new code the drive is likely to change state as it knows the transfer size and that will *correctly* cause an HSM error and what follows. Now the question is who gets the length wrong - Brasero or the ata translation code in libata Alan - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html