package postgresql-8.4 8.4.1-1 failed to install/upgrade: Unterprozess installiertes pre-removal-Skript gab den Fehlerwert 127 zurück

[Ernst Potucek]

Binary package hint: postgresql-8.4

It is not possible to deinstall the package "postgresql-8.4"

Ubuntu Version 9.10

Unfortunately i did install postgresplus-8.4.1-2 directly (not via synaptic).
after that, the programm evolution didn' t start.
after that i deinstalled all postgres packages and cancelled the directory ".postgres"
But there is one, which is not possible to deinstall: package postgresql-8.4.
When i want to deinstall this package i get the information:
"E: postgresql-8.4: Unterprozess installiertes pre-removal-Skript gab den Fehlerwert 127 zurück"

ProblemType: Package
AptOrdering: postgresql-8.4: Purge
Architecture: i386
Date: Sat Nov 21 20:19:02 2009
DistroRelease: Ubuntu 9.10
ErrorMessage: Unterprozess installiertes pre-removal-Skript gab den Fehlerwert 127 zurück
Package: postgresql-8.4 8.4.1-1
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
SourcePackage: postgresql-8.4
Title: package postgresql-8.4 8.4.1-1 failed to install/upgrade: Unterprozess installiertes pre-removal-Skript gab den Fehlerwert 127 zurück
Uname: Linux 2.6.31-14-generic i686