package rsyslog 4.2.0-2ubuntu8.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10

[Roy]

Binary package hint: rsyslog

release 10.04 10.04.1

expected no problem upgrade
instead received this error

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: rsyslog 4.2.0-2ubuntu8.1
ProcVersionSignature: Ubuntu 2.6.32-27.49-generic 2.6.32.26+drm33.12
Uname: Linux 2.6.32-27-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Thu Jan 20 18:28:31 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 10
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: rsyslog
Title: package rsyslog 4.2.0-2ubuntu8.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 10