[Mailman-Users] Mailman error - why ?!?

[Alessandro Luiz Petrocino]

Can anyone tell me what this means ?!?

[root at vega root]# Traceback (most recent call last):
  File "/www/ns-home/mailman/bin/qrunner", line 270, in ?
    main()
  File "/www/ns-home/mailman/bin/qrunner", line 230, in main
    qrunner.run()
  File "/www/ns-home/mailman/Mailman/Queue/Runner.py", line 59, in run
    filecnt = self._oneloop()
  File "/www/ns-home/mailman/Mailman/Queue/Runner.py", line 88, in
_oneloop
    msg, msgdata = self._switchboard.dequeue(filebase)
  File "/www/ns-home/mailman/Mailman/Queue/Switchboard.py", line 160, in
dequeue
    os.unlink(pckfile)
OSError: [Errno 16] Device or resource busy:
'/www/ns-home/mailman/qfiles/virgin/1054564372.998621+5869243c5ed943e649c73f66108af41c97c96959.pck'