Mailman 2.0.11 problems w/ qrunner

["Pablo Virgo" <virgopa@earlham.edu>]

I've got the better part of a small mailing list setup on a Debian 3.0
vanilla system (with latest security upgrades). Mailman and Exim seem to
be getting along, and Apache seems te be getting at the scripts correctly,
however attempts to login (either as an admin or a user) generate an:
Oops! We found a bug ... message. This is the typical result of a tail of
the error log:
Aug 09 19:54:04 2002 qrunner(880):      fp = open(self.__tmpfname, 'w')
Aug 09 19:54:04 2002 qrunner(880): IOError :  [Errno 13] Permission
denied: '/var/lib/mailman/locks/qrunner.lock.lists.ncai.org.880'Aug 09 19:55:04 2002 qrunner(885): Traceback (most recent call last):
Aug 09 19:55:04 2002 qrunner(885):   File "/usr/lib/mailman/cron/qrunner",
line 276, in ?Aug 09 19:55:04 2002 qrunner(885):      lock.lock(timeout=0.5)
Aug 09 19:55:04 2002 qrunner(885):   File
"/var/lib/mailman/Mailman/LockFile.py", line 219, in lockAug 09 19:55:04 2002 qrunner(885):      self.__write()
Aug 09 19:55:04 2002 qrunner(885):   File
"/var/lib/mailman/Mailman/LockFile.py", line 350, in __writeAug 09 19:55:04 2002 qrunner(885):      fp = open(self.__tmpfname, 'w')
Aug 09 19:55:04 2002 qrunner(885): IOError :  [Errno 13] Permission
denied: '/var/lib/mailman/locks/qrunner.lock.lists.ncai.org.885'
Any help is greatly appreciated.
~Pablo