package gitosis 0.2+20090917-2 failed to install/upgrade: ErrorMessage: subprocess installed post-removal script returned error exit status 1

[Thanuja]

This problem started right after I tried to upgrade the git installation using apt-get as given in the git website.
This also prevents reinstallation of gitosis, which is troublesome since it gives rise to a cyclical error.
For example when I issue sudo apt-get install python-setuptools it gives an error:
"The user 'gitosis' does not exist, but --system was given. Exiting. "

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: gitosis 0.2+20090917-2
ProcVersionSignature: Ubuntu 2.6.32-45.99-generic 2.6.32.60+drm33.26
Uname: Linux 2.6.32-45-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Nov 23 10:16:28 2012
ErrorMessage: ErrorMessage: subprocess installed post-removal script returned error exit status 1
PackageArchitecture: all
SourcePackage: gitosis
Title: package gitosis 0.2+20090917-2 failed to install/upgrade: ErrorMessage: subprocess installed post-removal script returned error exit status 1

[dino99 (9d9)]

That version is no more supported; and backport is not expected as its not a 'security' problem