No go. After switching to main repository and reloading it, I see following error box: Could not download all repository indexes The repository might be no longer available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and the correct writing of the repository address in the preferences. with this content: http://us.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.46 80] http://archive.ubuntu.com/ubuntu/dists/feisty/main/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.45 80] http://archive.ubuntu.com/ubuntu/dists/feisty-security/main/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.45 80] http://archive.ubuntu.com/ubuntu/dists/feisty-security/restricted/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.45 80] http://archive.ubuntu.com/ubuntu/dists/feisty-updates/main/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.45 80] http://archive.ubuntu.com/ubuntu/dists/feisty-updates/restricted/binary-ia64/Packages.gz: 404 Not Found [IP: 91.189.88.45 80] Trying to run update-manager -d produces this: Getting upgrade prerequisites failed The system was unable to get the prerequisites for the upgrade. The upgrade will abort now and restore the original system state. Please report this as a bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bugreport. Content in /var/log/dist-upgrade/main.log: $=> cat main.log 2008-01-02 11:28:17,786 INFO release-upgrader version '0.81' started 2008-01-02 11:28:18,703 DEBUG lsb-release: 'feisty' 2008-01-02 11:28:18,703 DEBUG _pythonSymlinkCheck run 2008-01-02 11:28:19,380 DEBUG checkViewDepends() 2008-01-02 11:28:19,380 DEBUG getRequiredBackports() 2008-01-02 11:28:22,247 ERROR IOError in cache.update(): 'Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] '. Retrying (currentRetry: 0) 2008-01-02 11:28:24,874 ERROR IOError in cache.update(): 'Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] '. Retrying (currentRetry: 1) 2008-01-02 11:28:28,208 ERROR IOError in cache.update(): 'Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/feisty-backports/main/debian-installer/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.45 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-security/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/main/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] Failed to fetch http://archive.ubuntu.com/ubuntu/dists/feisty-updates/restricted/binary-ia64/Packages.gz404 Not Found [IP: 91.189.88.46 80] '. Retrying (currentRetry: 2) 2008-01-02 11:28:28,209 ERROR doUpdate() failed complettely 2008-01-02 11:28:28,854 ERROR Can not find backport 'release-upgrader-apt' Again, this problem occurs all the time on an Itanium system: -cpu product: 31 vendor: Intel Corp. physical id: 2 bus info: cpu@0 version: 5 size: 1300MHz uname -a: Linux hostname 2.6.20-16-mckinley #2 SMP Tue Dec 18 06:32:55 UTC 2007 ia64 GNU/Linux Are IA64 packages still maintained? Why would they disappear if they were there in the first place? On Dec 26, 2007 6:44 PM, Alan Tam