I had an issue with a lj 4014 printer and removed it to send back to hp, installed the hp LJ1018 and it printed fine for 2 days and then stopped printing and everything sat in the print queue and never printed. I suspect that it is something with the usb drivers maybe. I uninstalled and reinstalled the printer several times and never got a printed page out. Tried switching the port between usb001 usb002 and nothing. The old printer (4014) that i sent back is on dot4 printer port and when i select to switch to that one it errors out immediately. Any ideas why this is?