I still have the same problem when I try to upgrade from feisty to gutsy ... Checking for a new ubuntu release Done Upgrade tool signature Done Upgrade tool Done downloading extracting '/tmp/tmpYalKph/gutsy.tar.gz' authenticate '/tmp/tmpYalKph/gutsy.tar.gz' against '/tmp/tmpYalKph/gutsy.tar.gz.gpg' Reading cache Checking package manager Continue running under SSH? This session appears to be running under ssh. It is not recommended to perform a upgrade over ssh currently because in case of failure it is harder to recover. If you continue, a additional ssh daemon will be started at port '9004'. Do you want to continue? Continue [yN] y Starting additional sshd To make recovery in case of failure easier a additional sshd will be started on port '9004'. If anything goes wrong with the running ssh you can still connect to the additional one. Reading package lists: Done Reading state information: Done Reading state information: Done Reading state information: Done Done http://archive.ubuntu.com gutsy Release.gpg Done http://archive.ubuntu.com gutsy-updates Release.gpg Done http://us.archive.ubuntu.com feisty-backports Release.gpg Hit http://archive.ubuntu.com gutsy Release Done http://archive.ubuntu.com gutsy Release Hit http://archive.ubuntu.com gutsy-updates Release Done http://archive.ubuntu.com gutsy-updates Release Hit http://archive.ubuntu.com gutsy/main Packages Hit http://archive.ubuntu.com gutsy/restricted Packages Hit http://archive.ubuntu.com gutsy/universe Packages Hit http://archive.ubuntu.com gutsy/multiverse Packages Hit http://archive.ubuntu.com gutsy-updates/main Packages Hit http://archive.ubuntu.com gutsy-updates/restricted Packages Done http://us.archive.ubuntu.com feisty-backports Release Done http://us.archive.ubuntu.com feisty-backports Release Done http://us.archive.ubuntu.com feisty-backports/main/debian-installer Packages Done http://us.archive.ubuntu.com feisty-backports/main/debian-installer Packages Done downloading Reading package lists: Donem feisty-backports/main/debian-installer Packages: 96 Reading state information: Done Reading state information: Done Reading state information: Done Done http://us.archive.ubuntu.com feisty-backports/main/debian-installer release-upgrader-dpkg 1.14.5ubuntu11.2 Done http://us.archive.ubuntu.com feisty-backports/main/debian-installer release-upgrader-apt 0.6.46.4ubuntu10.3 Done downloading Reading cache Checking package manager Continue running under SSH? This session appears to be running under ssh. It is not recommended to perform a upgrade over ssh currently because in case of failure it is harder to recover. If you continue, a additional ssh daemon will be started at port '9004'. Do you want to continue? Continue [yN] y Starting additional sshd To make recovery in case of failure easier a additional sshd will be started on port '9004'. If anything goes wrong with the running ssh you can still connect to the additional one. Reading package lists: Done Reading state information: Done Reading state information: Done Reading state information: Done Done http://archive.ubuntu.com gutsy Release.gpg Done http://archive.ubuntu.com gutsy-updates Release.gpg Hit http://archive.ubuntu.com gutsy Release Done http://archive.ubuntu.com gutsy Release Hit http://archive.ubuntu.com gutsy-updates Release Done http://archive.ubuntu.com gutsy-updates Release Hit http://archive.ubuntu.com gutsy/main Packages Hit http://archive.ubuntu.com gutsy/restricted Packages Hit http://archive.ubuntu.com gutsy/universe Packages Hit http://archive.ubuntu.com gutsy/multiverse Packages Hit http://archive.ubuntu.com gutsy-updates/main Packages Hit http://archive.ubuntu.com gutsy-updates/restricted Packages Done downloading Updating repository information Done http://archive.ubuntu.com gutsy Release.gpg Done http://archive.ubuntu.com gutsy-updates Release.gpg Hit http://archive.ubuntu.com gutsy Release Done http://archive.ubuntu.com gutsy Release Hit http://archive.ubuntu.com gutsy-updates Release Done http://archive.ubuntu.com gutsy-updates Release Hit http://archive.ubuntu.com gutsy/main Packages Hit http://archive.ubuntu.com gutsy/restricted Packages Hit http://archive.ubuntu.com gutsy/universe Packages Hit http://archive.ubuntu.com gutsy/multiverse Packages Hit http://archive.ubuntu.com gutsy-updates/main Packages Hit http://archive.ubuntu.com gutsy-updates/restricted Packages Done downloading Checking package manager Reading package lists: Done Reading state information: Done Reading state information: Done Reading state information: Done Asking for confirmation Support for some applications ended Canonical Ltd. no longer provides support for the following software packages. You can still get support from the community. If you have not enabled community maintained software (universe), these packages will be suggested for removal at the end of the upgrade. gcj-4.1-base gij-4.1 libjasper-runtime liblzo1 libportaudio0 libslab0 libstlport5.1 pmount ttf-baekmuk Do you want to start the upgrade? 8 packages are going to be removed. 97 new packages are going to be installed. 983 packages are going to be upgraded. You have to download a total of 10000k. This download will take about 1 minutes with a 1Mbit DSL connection and about 23 minutes with a 56k modem. Fetching and installing the upgrade can take several hours and cannot be canceled at any time later. Continue [yN] Details [d]y Fetching Done http://archive.ubuntu.com gutsy/universe gs-common 8.61.dfsg.1~svn8187-0ubuntu3 Done http://archive.ubuntu.com gutsy/universe gs-esp 8.61.dfsg.1~svn8187-0ubuntu3 Done http://archive.ubuntu.com gutsy-updates/main hplip 2.7.7.dfsg.1-0ubuntu5.1 Done http://archive.ubuntu.com gutsy-updates/main hplip-data 2.7.7.dfsg.1-0ubuntu5.1 Done http://archive.ubuntu.com gutsy/universe phpmyadmin 4:2.10.3-1 Done downloading Done http://archive.ubuntu.com gutsy-updates/main hplip 2.7.7.dfsg.1-0ubuntu5.1 Done http://archive.ubuntu.com gutsy-updates/main hplip-data 2.7.7.dfsg.1-0ubuntu5.1 Done downloading Done http://archive.ubuntu.com gutsy-updates/main hplip 2.7.7.dfsg.1-0ubuntu5.1 Done http://archive.ubuntu.com gutsy-updates/main hplip-data 2.7.7.dfsg.1-0ubuntu5.1 Done downloading Could not download the upgrades The upgrade aborts now. Please check your internet connection or installation media and try again. Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/h/hplip/hplip_2.7.7.dfsg.1-0ubuntu5.1_i386.deb Size mismatch Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/h/hplip/hplip-data_2.7.7.dfsg.1-0ubuntu5.1_all.deb Size mismatch Restoring original system state Aborting Reading package lists: Done Reading state information: Done Reading state information: Done Reading state information: Done If I want to add those file manualy, where should I place them ?