aptitude is not the recommended interface for commandline-based upgrades; it's recommended that you use apt-get instead. And aptitude is known to not work right with multiarch packages (which is what libpam-modules:i386 is). I'm sorry, but it sounds like aptitude has made a real mess of your system.
You may be able to fix this by running 'sudo apt-get install ubuntu- desktop'. But if that doesn't solve it, I think you'll want to take this question to one of the support forums. (ubuntuforums.org, askubuntu.com, etc) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/871083 Title: package libpam-modules 1.1.3-2ubuntu1 failed to install/upgrade: ErrorMessage: './usr/share/man/man8/pam_shells.8.gz' is different from the same file on the system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pam/+bug/871083/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
