Unauthorized even for root

[tong]

Hi,

I saw "Unauthorized" in /var/log/cups/error_log, when the LogLevel is warn,
if I enable/disable the printer even by root:

 E [23/Sep/2006:21:26:55 +0200] Pause-Printer: Unauthorized
 E [23/Sep/2006:21:28:03 +0200] Resume-Printer: Unauthorized

Is this normal?

PS. Here is how I generated the error, though the printer does seem to be
enabled/disabled accordingly:

  $ cupsdisable $PRINTER; date
  Sat Sep 23 21:26:55 CEST 2006

  $ lpc status; lpq -a
  epson_cx1500:
	  printer is on device 'usb' speed -1
	  queuing is enabled
	  printing is disabled
	  no entries
	  daemon present
  no entries

  $ cupsenable $PRINTER; date
  Sat Sep 23 21:28:03 CEST 2006

  $ lpc status; lpq -a
  epson_cx1500:
	  printer is on device 'usb' speed -1
	  queuing is enabled
	  printing is enabled
	  no entries
	  daemon present
  no entries

thank