Upgrade to edgy: can't resolve courier packages dependency

[Mario Vukelic]

On Sun, 2007-04-08 at 05:00 +0100, marc wrote:

>   Extract templates from packages: 100%
>   Preconfiguring packages ...
>   dpkg: error processing courier-authdaemon (--remove):
>    Package is in a very bad inconsistent state - you should
>    reinstall it before attempting a removal.
>   terminate called after throwing an instance of 'std::logic_error'
>     what():  basic_string::_S_construct NULL not valid
>   Errors were encountered while processing:
>    courier-authdaemon
>   Aborted (core dumped)

Ok, courier-authdaemon is indeed borked. I am afraid (at least I can't
think of another option) you have to force a reinstall:

dpkg -i
--force-all /var/cache/apt/archives/courier-authdaemon<version>.deb

This is a bit dangerous (see the output of "dpkg --force-help" and man
dpkg), but it should bring the package into a consistent state again.
Follow up with  alternating between "apt-get -f install" and "aptitude
dist-upgrade".