Thanks for looking into this. I just rebuilt Ubuntu's 1.3.9 package (from Jaunty) with the patch for STR #3117, and we still have the same error. I also compiled stock 1.3.11 (without any Ubuntu patches), and again, the same behavior: berkeley/lpq prints that the printer is "ready and printing" but lists no jobs.
I'm a little confused by the patch, admittedly -- it seems to only talk about localhost, and our use case is when talking to a remote server running 1.4 with $CUPS_SERVER or -h set.
This STR has not been updated by the submitter for two or more weeks and has been closed as required by the CUPS Configuration Management Plan. If the issue still requires resolution, please re-submit a new STR.