D [05/Jul/2011:18:04:38 -0700] [Job 688] libusb couldn't open USB device /dev/bus/usb/002/002: Permission denied.
D [05/Jul/2011:18:04:38 -0700] [Job 688] libusb requires write access to USB device nodes.
D [05/Jul/2011:18:04:38 -0700] [Job 688] prnt/backend/hp.c 745: ERROR: open device failed stat=12: hp:-/usb/OfficeJet_K80xi?serial=MY256D61Y8OH