package clamav-base 0.97 dfsg-2ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128

[Jason]

Binary package hint: clamav

said connection error with software center.. I was connected to the internet!!

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: clamav-base 0.97+dfsg-2ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
Date: Thu May 26 07:29:39 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 128
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427)
PackageArchitecture: all
SourcePackage: clamav
Title: package clamav-base 0.97+dfsg-2ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128
UpgradeStatus: No upgrade log present (probably fresh install)