Something

Microtel2:/var/cache/apt/archives# aptitude reinstall courier-authdaemon courier-imap
Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
The following packages have been kept back:
  adduser apt apt-utils aptitude bash bind9 bind9-host debianutils dnsutils
  gnupg initscripts libfam0c102 libisccc0 mc netbase nfs-common passwd
  pciutils pppoeconf python python-newt reportbug ssh sysvinit tasksel
  util-linux w3m whiptail
The following packages will be REINSTALLED:
  courier-authdaemon courier-imap
0 packages upgraded, 0 newly installed, 2 reinstalled, 0 to remove and 28 not upgraded.
Need to get 0B/587kB of archives. After unpacking 0B will be used.
Writing extended state information... Done
Preconfiguring packages ...
(Reading database ... 31072 files and directories currently installed.)
Preparing to replace courier-authdaemon 0.58-4 (using .../courier-authdaemon_0.58-4_i386.deb) ...
Stopping Courier authentication services: authdaemond.
Unpacking replacement courier-authdaemon ...
Preparing to replace courier-imap 4.1.1.20060828-5 (using .../courier-imap_4.1.1.20060828-5_i386.deb) ...
Stopping Courier IMAP server:Unknown option '-pid='
invoke-rc.d: initscript courier-imap, action "stop" failed.
dpkg: warning - old pre-removal script returned error exit status 1
dpkg - trying script from the new package instead ...
Stopping Courier IMAP server:Unknown option '-pid='
invoke-rc.d: initscript courier-imap, action "stop" failed.
dpkg: error processing /var/cache/apt/archives/courier-imap_4.1.1.20060828-5_i386.deb (--unpack):
 subprocess new pre-removal script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/courier-imap_4.1.1.20060828-5_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Ack!  Something bad happened while installing packages.  Trying to recover:
Setting up courier-authdaemon (0.58-4) ...
Starting Courier authentication services: authdaemond.

Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done