With a connection between a G4 and a HP All-in-One 3015 Printer it works like a charm. I recently set up a new MBP C2 Duo and it also worked like a charm. Then it stopped working for no reason I can discern. Now, I connect the G4 to the printer and it works well; I connect it to the MBP with the same USB and the light on the printer blinks 2-3 times and stops without printing at all. I reinstalled the drivers, tried restarting it with no success. Any suggestions would be greatly appreciated.