[cups.general] Can not cancel a completed job ?

[Salatiel Filho]

i am trying to purge all completed jobs , but for some reason if i run
cancel over a completed job i can not purge it, but if i do cancel -a
QUEUE it purge all jobs including completed ones.


# cancel TESTE-410
cancel: cancel-job failed: Job #410 is already completed - can't cancel.
# cancel -a TESTE


RH 5.4 , cups 1.3.7

What am i doing wrong ?
What is the right way to purge completed jobs ?
Thanks;

-- 
[]'s
Salatiel

"O maior prazer do inteligente é bancar o  idiota
   diante de um  idiota que banca o inteligente".