problems with mailman

["Lic. Martin Marques" <martin bugs unl edu ar>]

I started have permission problems with mailman just now. All messages 
sent to the lists get shunt, and when I try to unshunt them I get these 
errors in mailman/error log:

Dec 28 21:05:41 2005 (23314) Archive file access failure:
        /var/lib/mailman/archives/private/depto.mbox/depto.mbox [Errno 13] 
Permission denied: 
'/var/lib/mailman/archives/private/depto.mbox/depto.mbox'
Dec 28 21:05:41 2005 (23314) Uncaught runner exception: [Errno 13] 
Permission denied: 
'/var/lib/mailman/archives/private/depto.mbox/depto.mbox'
Dec 28 21:05:41 2005 (23314) Traceback (most recent call last):
  File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 111, in _oneloop
    self._onefile(msg, msgdata)
  File "/usr/lib/mailman/Mailman/Queue/Runner.py", line 167, in _onefile
    keepqueued = self._dispose(mlist, msg, msgdata)
  File "/usr/lib/mailman/Mailman/Queue/ArchRunner.py", line 73, in 
_dispose
    mlist.ArchiveMail(msg)
  File "/usr/lib/mailman/Mailman/Archiver/Archiver.py", line 199, in 
ArchiveMail
    self.__archive_to_mbox(msg)
  File "/usr/lib/mailman/Mailman/Archiver/Archiver.py", line 168, in 
__archive_to_mbox
    mbox = self.__archive_file(afn)
  File "/usr/lib/mailman/Mailman/Archiver/Archiver.py", line 156, in 
__archive_file
    return Mailbox.Mailbox(open(afn, 'a+'))
IOError: [Errno 13] Permission denied: 
'/var/lib/mailman/archives/private/depto.mbox/depto.mbox'


Now permissions look OK, and check_perms finishes with everything OK:

[root newweb mailman]# ./bin/check_perms
No se han encontrado problemas
[root newweb mailman]# ls -ld 
/var/lib/mailman/archives/private/depto.mbox/
drwxrwsr-x  2 root mailman 4096 ene  7  2005 
/var/lib/mailman/archives/private/depto.mbox/

What is wrong, and why did it work OK until now?

--
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---------------------------------------------------------
Lic. Martín Marqués         |   SELECT 'mmarques' || 
Centro de Telemática        |       '@' || 'unl.edu.ar';
Universidad Nacional        |   DBA, Programador,
    del Litoral             |   Administrador
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