mailman upgrade

[Noah]

Hi there,

My qrunner is getting hung about every 3-24 hours.  so I am trying to 
solve the problem.  It appears that I have the latest mailman version 
installed but the OS and arch version are wrong.  apt-get is attempting 
to correct this.  Does anybody know who to get dpkg and/or apt-get to 
solve this problem.  Here is the CLI output from apt-get.

---- snip ---

root at enabled:/var/lib/mailman/logs# apt-get upgrade
yeading package lists... 0%
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
   mailman
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
22 not fully installed or removed.
Need to get 0B/8672kB of archives.
After this operation, 0B of additional disk space will be used.
Preconfiguring packages ...n]?
(Reading database ... 47240 files and directories currently installed.)
Preparing to replace mailman 1:2.1.9-9ubuntu1.2 (using 
.../mailman_1%3a2.1.9-9ubuntu1.4_amd64.deb) ...
  * Stopping Mailman master qrunner mailmanctl 
   [ OK ]
dpkg: error processing 
/var/cache/apt/archives/mailman_1%3a2.1.9-9ubuntu1.4_amd64.deb (--unpack):
  subprocess pre-installation script returned error exit status 1
No updates are necessary.

--- snip --