package squid 2.7.STABLE9-2.1ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 100

Binary package hint: squid

I got this crash during a system update this morning. Nothing special to mention.

Here is the error from the term.log
===
Setting up squid (2.7.STABLE9-2.1ubuntu4) ...
invoke-rc.d: unknown initscript, /etc/init.d/squid not found.
invoke-rc.d: unknown initscript, /etc/init.d/squid not found.
dpkg: error processing squid (--configure):
 subprocess installed post-installation script returned error exit status 100
===

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: squid 2.7.STABLE9-2.1ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
Architecture: amd64
Date: Thu Mar 10 09:00:03 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 100
SourcePackage: squid
Title: package squid 2.7.STABLE9-2.1ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 100
UpgradeStatus: No upgrade log present (probably fresh install)