package ca-certificates-java (not installed) failed to install/upgrade: subprocess dpkg-deb --control returned error exit status 2

[Kevin Riddle]

I can't install anything at all.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: ca-certificates-java (not installed)
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Fri Jul 22 20:55:45 2011
DpkgTerminalLog:
 dpkg-deb: error: `/var/cache/apt/archives/ca-certificates-java_20100412_all.deb' is not a debian format archive
 dpkg: error processing /var/cache/apt/archives/ca-certificates-java_20100412_all.deb (--unpack):
  subprocess dpkg-deb --control returned error exit status 2
ErrorMessage: subprocess dpkg-deb --control returned error exit status 2
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: ca-certificates-java
Title: package ca-certificates-java (not installed) failed to install/upgrade: subprocess dpkg-deb --control returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kai Kasurinen (kai-kasurinen)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that there was an error on your system when trying to install a particular package. Please execute the following command, as it will clear your package cache, in a terminal:

sudo apt-get clean

Then try performing the update again. This will likely resolve your issue, but the failure could be caused by filesystem or memory corruption. So please also run a fsck on your filesystem(s) and a memory test. Thanks in advance!