The two burners are identical and the software on both is Toast 10. On the slower machine, I selected 8X burn speed instead of 'Best', which did increase the speed a bit, but still averaged 2X overall. Could it be a bad drive motor bearing or dust? On Dec 20, 2009, at 2:54 PM, Douglas Feick wrote: > The obvious answer, not necessarily the correct one, is that the > speed isn't limited by the computer, but by the burner itself, or the > software it uses...Doug F. > --- > Manage your account options at //www.freelists.org/list/muglo > > > Wayne Dobson pwdobson@xxxxxxxxxx (519) 474-1253 res. (519) 860-2725 cell --- Manage your account options at //www.freelists.org/list/muglo