lpstat -p printer stylus-photo-820-1 disabled since Jan 01 00:00 - Unable to open HAL device "hal:///org/freedesktop/Hal/devices/usb_usb_device_4b8_5_100_-1_W02L20112141002550_0"
I did not see another reply to this very old message.
I encountered the same thing when I installed a new USB Epson Stylus printer. I had to delete the HAL created printer as this is broken and recreated the printer using the System Settings -> Printing which is a panel link to /usr/bin/printconf-gui. After deleting the HAL created print queue and created a new queue for the printer.
Good luck with your Epson printer.
-- James McKenzie
