I just installed the following Mac OS 10.3 two printer drivers for a Fiery Printer. (It's a Konica Minolta BizHub C350)
Fiery X3e 22C-KM PS v2.0
Fiery X3e 22C-KM PS v2.0 eu
When I try to print use the drivers, the printer just pauses.
It's worth nothing I downloaded a Mac OS 10.3 driver from the Konica Minolta site even though my Mac is OS 10.5. Nothing more recent was available.