Allrighty... I'm running a G4 powerbook. 867mhz processor 640 mb RAM 60gb HD You know, the works right? Anywho, I have an external dvd burner that I bought, and up until about two or three weeks ago it worked. I didn't change any system settings, didn't delete anything, move anything... it just simply stopped being recognized. I used patchburn to create the profile way back when and it worked just fine. And I know its not the burner that's the problem because it still works with my tablet pc. Burner spec-wise, its a usb only toshiba external, that up until this point had not disappointed. If you've got any idea why my mac would just simply stop even noticing that I'd plugged the external burner into the usb port (it recognizes everything else) please, let me know.