[Mailman-Users] logs no longer working

[Webmaster]

I recently upgraded mailman to 2.1.9 and everything seems to
be working fine except somehow all mailman logging has ceased. 
I am running fedora core 5. my permissions on /var/log are

drwxrwsr-x  2 mailman  mailman       4096 Jan  7 04:04 mailman

and in /var/log/mailman are

-rw-rw-r-- 1 mailman mailman      0 Jan  7 04:04 qrunner

I have restarted the service with no difference. suggestions anyone? 
thank you in advance!