I am running OSX Tiger 10.4.2, on an imac G5. After printing 4-5 Photoshop files, my mac loses track of my printer, and tells me none is connected. On restart of my computer, all is well until I print another 4-5 files, and same problem. I have made sure I have the latest driver from the printer manufacturer's website. I even got a new printer, but with the same result.