package redmine 0.9.3-1 failed to install with PostgreSQL integration

Binary package hint: redmine

in a single aptitude/apt-get session I ordered to setup redmine with pgsql connector and let aut-deps select the needed dependecies (pgsql server/client, ruby libraries). The Text-Wizard opened and asked me for enabling a postgres db, but the wizard went in troubles and never recovered.

ubuntu@ubuntu-desktop:~$ lsb_release -rd
Description: Ubuntu 10.04.1 LTS
Release: 10.04

Note: I started to write this bug report because Ubuntu itself asked me to do so after system reboot. I will now try to recover/restart the setup and report further results...

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: redmine 0.9.3-1
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic i686
Architecture: i386
Date: Fri Oct 15 19:13:06 2010
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
PackageArchitecture: all
SourcePackage: redmine
Title: package redmine 0.9.3-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1