Is it possible that some all-in-one printers actually have a working print server inside them (e.g., an HP OfficeJet 6310)? I think this might be the case for some of them that have bullt-in Ethernet. I wonder, if that ends up being true, if the USB "camera" port could be hacked to allow daisy-chaining of a USB printer, (e.g., an HP LaserJet 1160). Of course, given that HP's drivers and softwares are hard enough to use under Leopard in the official, recommended way, finding an exploit for this would probably be quite challenging.