apt-get upgrade von Mailman schlaegt fehl

[Joern Bredereck <jb@bw-networx.net>]

Hallo,

was läuft da schief:

imap:~# apt-get upgrade -u
Reading Package Lists... Done
Building Dependency Tree... Done
The following packages will be upgraded:
  mailman
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0B/6611kB of archives.
After unpacking 879kB disk space will be freed.
Do you want to continue? [Y/n]
Preconfiguring packages ...
Looking for enabled languages (this may take some time) ... done.
(Reading database ... 31248 files and directories currently installed.)
Preparing to replace mailman 2.1.5-8 (using 
.../mailman_2.1.5-8sarge1_i386.deb) ...
Shutting down Mailman's master qrunner
dpkg: error processing /var/cache/apt/archives/mailman_2.1.5-8sarge1_i386.deb 
(--unpack):
 subprocess pre-installation script returned error exit status 1
No updates are necessary.
Starting Mailman's master qrunner.
Errors were encountered while processing:
 /var/cache/apt/archives/mailman_2.1.5-8sarge1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


Was ist zu tun?

Danke!


Gruß,

Jörn