Oct 23 04:02:56 2011 mailmanctl(11142): PID unreadable in: /var/mailman/data/master-qrunner.pid 
Oct 23 04:02:56 2011 mailmanctl(11142): [Errno 2] No such file or directory: '/var/mailman/data/master-qrunner.pid' 
Oct 23 04:02:56 2011 mailmanctl(11142): Is qrunner even running?