I installed the drivers on Leopard (on a Dual G5 and a MacBook Pro). I had no previous 3800 drivers on Tiger. I had to click on the Bonjour tab to see the printer. I didn't try to connect my printer to the USB port.
I have just upgraded to 10.5.2 and cannot get the 3800 driver to be added to printers. here are my choices:
When i select the 3800, i get an error message.
The Epson LFP remote panel and print utility seems to work, but i cannot load up the 3800 into printers.