I've always had a problem my Plextor SCSI 12x10x32 burner in MacOS X. With versions up to 10.1.3, I used the El Gato SCSI Helper. After 10.1.3, the problem in MacOS X was fixed and I no longer need the SCSI helper extension. I have never been able to burn CDs with iTunes or via any Apple provided application. So I have instead been using Toast, since it would recognize my burner and allow me to burn CDs in OS X, with the SCSI helper before 10.1.3 and afterwards without. Now with 10.2, Toast no longer recognizes my SCSI burner again. I thought this was fixed for good!!! The Finder will still recognize my SCSI drive as a regular CD drive for reading discs, just not for writing in Toast or anything else again.