I often can't DELETE printers from list - sometimes they are printers that I no longer use directly from my laptop but once used as shared from a Desktop Mac. They delete, but then next time I go into the Printer Setup Utility... there they are.
When I first noticed this it was happening on a printer that still had something queued (from my PB) to be printed... but I could only get it to disappear by PHYSICALLY (USB) attaching that printer to my PB. It would insist on printing those queued pages & would THEN be deleteable.
Of late, even empty printers won't stay deleted (Deskjet 930, Brother MFC 8300, HP 8300... etc).
Is there a printer queue file or cache or pref file that can be deleted as a work-around? (of course I'd prefer to have the Printer Setup Utility operate correctly) PSU operation?
OS 10.3.5 / PowerBook