This is the error copied from terminal when using aptitude when trying to install mount:
Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_i386.deb) ... /var/lib/dpkg/tmp.ci/preinst: 49: dpkg-vendor: not found dpkg: error processing /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb (--unpack): subprocess new pre-installation script returned error exit status 127 No apport report written because MaxReports has already been reached Errors were encountered while processing: /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: mount also will not update using update manager due to policy kit error as I reported above. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/704667 Title: Update-manager crashes on fresh natty installs -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs