Tried the commands you sent in email with following results: w2ctx@w2ctx-Latitude-D400:~$ sudo apt-get install -f [sudo] password for w2ctx: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: librpmio2 linux-headers-3.2.0-29 linux-headers-3.2.0-29-generic Use 'apt-get autoremove' to remove them. The following extra packages will be installed: linux-image-3.5.0-18-generic Suggested packages: fdutils linux-doc-3.5.0 linux-source-3.5.0 linux-tools The following NEW packages will be installed: linux-image-3.5.0-18-generic 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. 3 not fully installed or removed. Need to get 0 B/11.5 MB of archives. After this operation, 25.0 MB of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 212248 files and directories currently installed.) Unpacking linux-image-3.5.0-18-generic (from .../linux-image-3.5.0-18-generic_3.5.0-18.29_i386.deb) ... This kernel does not support a non-PAE CPU. dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-18-generic_3.5.0-18.29_i386.deb (--unpack): subprocess new pre-installation script returned error exit status 1 Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.5.0-18-generic /boot/vmlinuz-3.5.0-18-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.5.0-18-generic /boot/vmlinuz-3.5.0-18-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.5.0-18-generic_3.5.0-18.29_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) w2ctx@w2ctx-Latitude-D400:~$ sudo apt-get clean w2ctx@w2ctx-Latitude-D400:~$ sudo apt-get update Ign http://us.archive.ubuntu.com quantal InRelease Ign http://us.archive.ubuntu.com quantal-updates InRelease Ign http://security.ubuntu.com quantal-security InRelease Ign http://us.archive.ubuntu.com quantal-proposed InRelease Ign http://archive.canonical.com quantal InRelease Hit http://us.archive.ubuntu.com quantal Release.gpg Hit http://security.ubuntu.com quantal-security Release.gpg Ign http://extras.ubuntu.com quantal InRelease Hit http://us.archive.ubuntu.com quantal-updates Release.gpg Get:1 http://us.archive.ubuntu.com quantal-proposed Release.gpg [933 B] Hit http://archive.canonical.com quantal Release.gpg Hit http://security.ubuntu.com quantal-security Release Hit http://extras.ubuntu.com quantal Release.gpg Hit http://us.archive.ubuntu.com quantal Release Hit http://us.archive.ubuntu.com quantal-updates Release Hit http://extras.ubuntu.com quantal Release Hit http://archive.canonical.com quantal Release Get:2 http://us.archive.ubuntu.com quantal-proposed Release [49.6 kB] Hit http://security.ubuntu.com quantal-security/main Sources Hit http://extras.ubuntu.com quantal/main Sources Hit http://security.ubuntu.com quantal-security/restricted Sources Hit http://archive.canonical.com quantal/partner i386 Packages Hit http://us.archive.ubuntu.com quantal/main Sources Hit http://security.ubuntu.com quantal-security/universe Sources Hit http://extras.ubuntu.com quantal/main i386 Packages Hit http://us.archive.ubuntu.com quantal/restricted Sources Hit http://security.ubuntu.com quantal-security/multiverse Sources Hit http://us.archive.ubuntu.com quantal/universe Sources Hit http://us.archive.ubuntu.com quantal/multiverse Sources Hit http://security.ubuntu.com quantal-security/main i386 Packages Hit http://us.archive.ubuntu.com quantal/main i386 Packages Hit http://us.archive.ubuntu.com quantal/restricted i386 Packages Hit http://security.ubuntu.com quantal-security/restricted i386 Packages Hit http://us.archive.ubuntu.com quantal/universe i386 Packages Hit http://us.archive.ubuntu.com quantal/multiverse i386 Packages Hit http://security.ubuntu.com quantal-security/universe i386 Packages Hit http://security.ubuntu.com quantal-security/multiverse i386 Packages Hit http://us.archive.ubuntu.com quantal/main Translation-en Hit http://us.archive.ubuntu.com quantal/multiverse Translation-en Hit http://security.ubuntu.com quantal-security/main Translation-en Hit http://us.archive.ubuntu.com quantal/restricted Translation-en Hit http://security.ubuntu.com quantal-security/multiverse Translation-en Hit http://us.archive.ubuntu.com quantal/universe Translation-en Ign http://extras.ubuntu.com quantal/main Translation-en_US Hit http://us.archive.ubuntu.com quantal-updates/main Sources Hit http://us.archive.ubuntu.com quantal-updates/restricted Sources Ign http://extras.ubuntu.com quantal/main Translation-en Hit http://us.archive.ubuntu.com quantal-updates/universe Sources Ign http://archive.canonical.com quantal/partner Translation-en_US Hit http://us.archive.ubuntu.com quantal-updates/multiverse Sources Hit http://us.archive.ubuntu.com quantal-updates/main i386 Packages Hit http://us.archive.ubuntu.com quantal-updates/restricted i386 Packages Hit http://security.ubuntu.com quantal-security/restricted Translation-en Ign http://archive.canonical.com quantal/partner Translation-en Hit http://us.archive.ubuntu.com quantal-updates/universe i386 Packages Hit http://us.archive.ubuntu.com quantal-updates/multiverse i386 Packages Hit http://security.ubuntu.com quantal-security/universe Translation-en Hit http://us.archive.ubuntu.com quantal-updates/main Translation-en Hit http://us.archive.ubuntu.com quantal-updates/multiverse Translation-en Hit http://us.archive.ubuntu.com quantal-updates/restricted Translation-en Hit http://us.archive.ubuntu.com quantal-updates/universe Translation-en Get:3 http://us.archive.ubuntu.com quantal-proposed/restricted i386 Packages [14 B] Get:4 http://us.archive.ubuntu.com quantal-proposed/main i386 Packages [27.7 kB] Get:5 http://us.archive.ubuntu.com quantal-proposed/multiverse i386 Packages [14 B] Get:6 http://us.archive.ubuntu.com quantal-proposed/universe i386 Packages [13.5 kB] Hit http://us.archive.ubuntu.com quantal-proposed/main Translation-en Hit http://us.archive.ubuntu.com quantal-proposed/multiverse Translation-en Hit http://us.archive.ubuntu.com quantal-proposed/restricted Translation-en Ign http://security.ubuntu.com quantal-security/main Translation-en_US Hit http://us.archive.ubuntu.com quantal-proposed/universe Translation-en Ign http://security.ubuntu.com quantal-security/multiverse Translation-en_US Ign http://security.ubuntu.com quantal-security/restricted Translation-en_US Ign http://security.ubuntu.com quantal-security/universe Translation-en_US Ign http://us.archive.ubuntu.com quantal/main Translation-en_US Ign http://us.archive.ubuntu.com quantal/multiverse Translation-en_US Ign http://us.archive.ubuntu.com quantal/restricted Translation-en_US Ign http://us.archive.ubuntu.com quantal/universe Translation-en_US Ign http://us.archive.ubuntu.com quantal-updates/main Translation-en_US Ign http://us.archive.ubuntu.com quantal-updates/multiverse Translation-en_US Ign http://us.archive.ubuntu.com quantal-updates/restricted Translation-en_US Ign http://us.archive.ubuntu.com quantal-updates/universe Translation-en_US Ign http://us.archive.ubuntu.com quantal-proposed/main Translation-en_US Ign http://us.archive.ubuntu.com quantal-proposed/multiverse Translation-en_US Ign http://us.archive.ubuntu.com quantal-proposed/restricted Translation-en_US Ign http://us.archive.ubuntu.com quantal-proposed/universe Translation-en_US Fetched 91.7 kB in 5s (16.2 kB/s) Reading package lists... Done w2ctx@w2ctx-Latitude-D400:~$