sudo apt-get upgrade gives messages indicating that there is nothing to install
sudo apt-get update gives a long list of errors:
Ign cdrom://Kubuntu 7.10 _Gutsy Gibbon_ - Release i386 (20071016.1) gutsy/main Translation-it
Ign cdrom://Kubuntu 7.10 _Gutsy Gibbon_ - Release i386 (20071016.1) gutsy/restricted Translation-it
Ign
http://it.archive.ubuntu.com gutsy Release.gpg
Get:1
http://archive.canonical.com gutsy Release.gpg [189B]
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http://archive.canonical.com gutsy/partner Translation-it
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http://security.ubuntu.com gutsy-security Release.gpg
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http://security.ubuntu.com gutsy-security/universe Translation-it
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http://security.ubuntu.com gutsy-security/main Translation-it
Ign
http://it.archive.ubuntu.com gutsy/main Translation-it
Hit
http://archive.canonical.com gutsy Release
Ign
http://security.ubuntu.com gutsy-security/multiverse Translation-it
Ign
http://security.ubuntu.com gutsy-security/restricted Translation-it
Ign
http://security.ubuntu.com gutsy-security Release
Ign
http://it.archive.ubuntu.com gutsy/restricted Translation-it
Ign
http://security.ubuntu.com gutsy-security/universe Packages
Ign
http://archive.canonical.com gutsy/partner Packages
Ign
http://security.ubuntu.com gutsy-security/main Packages
Ign
http://security.ubuntu.com gutsy-security/multiverse Packages
Ign
http://security.ubuntu.com gutsy-security/restricted Packages
Ign
http://archive.canonical.com gutsy/partner Sources
Ign
http://it.archive.ubuntu.com gutsy/universe Translation-it
Err
http://security.ubuntu.com gutsy-security/universe Packages
404 Not Found
Err
http://security.ubuntu.com gutsy-security/main Packages
404 Not Found
Err
http://security.ubuntu.com gutsy-security/multiverse Packages
404 Not Found
Hit
http://archive.canonical.com gutsy/partner Packages
Ign
http://it.archive.ubuntu.com gutsy/multiverse Translation-it
Err
http://security.ubuntu.com gutsy-security/restricted Packages
404 Not Found
Ign
http://it.archive.ubuntu.com gutsy-updates Release.gpg
Ign
http://it.archive.ubuntu.com gutsy-updates/main Translation-it
Hit
http://archive.canonical.com gutsy/partner Sources
Ign
http://it.archive.ubuntu.com gutsy-updates/restricted Translation-it
Ign
http://it.archive.ubuntu.com gutsy-updates/universe Translation-it
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http://it.archive.ubuntu.com gutsy-updates/multiverse Translation-it
Ign
http://it.archive.ubuntu.com gutsy-security Release.gpg
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http://it.archive.ubuntu.com gutsy-security/main Translation-it
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http://it.archive.ubuntu.com gutsy-security/restricted Translation-it
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http://it.archive.ubuntu.com gutsy-security/universe Translation-it
Ign
http://it.archive.ubuntu.com gutsy-security/multiverse Translation-it
Ign
http://it.archive.ubuntu.com gutsy Release
Ign
http://it.archive.ubuntu.com gutsy-updates Release
Ign
http://it.archive.ubuntu.com gutsy-security Release
Ign
http://it.archive.ubuntu.com gutsy/main Packages
Ign
http://it.archive.ubuntu.com gutsy/restricted Packages
Ign
http://it.archive.ubuntu.com gutsy/universe Packages
Ign
http://it.archive.ubuntu.com gutsy/multiverse Packages
Ign
http://it.archive.ubuntu.com gutsy/main Sources
Ign
http://it.archive.ubuntu.com gutsy/universe Sources
Ign
http://it.archive.ubuntu.com gutsy/restricted Sources
Ign
http://it.archive.ubuntu.com gutsy/multiverse Sources
Ign
http://it.archive.ubuntu.com gutsy-updates/main Packages
Ign
http://it.archive.ubuntu.com gutsy-updates/restricted Packages
Ign
http://it.archive.ubuntu.com gutsy-updates/universe Packages
Ign
http://it.archive.ubuntu.com gutsy-updates/multiverse Packages
Ign
http://it.archive.ubuntu.com gutsy-updates/universe Sources
Ign
http://it.archive.ubuntu.com gutsy-updates/main Sources
Ign
http://it.archive.ubuntu.com gutsy-updates/multiverse Sources
Ign
http://it.archive.ubuntu.com gutsy-updates/restricted Sources
Ign
http://it.archive.ubuntu.com gutsy-security/main Packages
Ign
http://it.archive.ubuntu.com gutsy-security/restricted Packages
Ign
http://it.archive.ubuntu.com gutsy-security/universe Packages
Ign
http://it.archive.ubuntu.com gutsy-security/multiverse Packages
Ign
http://it.archive.ubuntu.com gutsy-security/universe Sources
Ign
http://it.archive.ubuntu.com gutsy-security/main Sources
Ign
http://it.archive.ubuntu.com gutsy-security/multiverse Sources
Ign
http://it.archive.ubuntu.com gutsy-security/restricted Sources
Err
http://it.archive.ubuntu.com gutsy/main Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/restricted Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/universe Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/multiverse Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/main Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/universe Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy/restricted Sources
404 Not Found [IP: 193.206.139.34 80]
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http://it.archive.ubuntu.com gutsy/multiverse Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/main Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/restricted Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/universe Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/multiverse Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/universe Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/main Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/multiverse Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-updates/restricted Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/main Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/restricted Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/universe Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/multiverse Packages
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/universe Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/main Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/multiverse Sources
404 Not Found [IP: 193.206.139.34 80]
Err
http://it.archive.ubuntu.com gutsy-security/restricted Sources
404 Not Found [IP: 193.206.139.34 80]
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Lettura della lista dei pacchetti in corso... Fatto
E: Impossibile scaricare alcune file di indice, essi verranno ignorati, oppure si useranno quelli precedenti.