I just receive a technical bulletin from kodak, on coming upgrade for those using prinergy 4.0 to 4.1 major upgrade. Workshop client only supported mac OS 10.4 or later. S***..... i been dum lot of money keep on buying the service from kodak. Now they come out the system that make me , no is force me to buy new Macintosh. I have around 15 mac that running mac OS 10.3.9. Anyone know what's the different with os 10.3 and 10.4 ?