I've seen it happen on both my SCSI drives (Kenweek 52X TrueX reader, and
Plextor burner) I haven't had anything I needed to rip lately so I haven't
looked into it. 
--
Andy Zbikowski, Sys Admin   | (WEB) http://www.ltiflex.com
LTI Flexible Products, Inc. | (PH)  763-428-9119 (EX) 132
21801 Industrial Blvd       | (FX)  763-428-9126
Rogers, MN  55374           | (PCS) 612-306-6055