l'ho rifatto per sicurezza ed è venuto questo:
gabriele@dragon:~$ sudo apt-get update
[sudo] password for gabriele:
Building old list of packages... [done]
Building old list of available updates... [done]
Building old list of watched packages... [done]
Hit
http://archive.ubuntu.com jaunty Release.gpg
Hit
http://archive.ubuntu.com jaunty/main Translation-it
Hit
http://archive.ubuntu.com jaunty/universe Translation-it
Hit
http://archive.ubuntu.com jaunty/restricted Translation-it
Hit
http://archive.ubuntu.com jaunty/multiverse Translation-it
Hit
http://archive.ubuntu.com jaunty-updates Release.gpg
Ign
http://archive.ubuntu.com jaunty-updates/main Translation-it
Ign
http://archive.ubuntu.com jaunty-updates/universe Translation-it
Ign
http://archive.ubuntu.com jaunty-updates/restricted Translation-it
Ign
http://archive.ubuntu.com jaunty-updates/multiverse Translation-it
Hit
http://archive.ubuntu.com jaunty-security Release.gpg
Ign
http://archive.ubuntu.com jaunty-security/main Translation-it
Ign
http://archive.ubuntu.com jaunty-security/universe Translation-it
Ign
http://archive.ubuntu.com jaunty-security/restricted Translation-it
Ign
http://archive.ubuntu.com jaunty-security/multiverse Translation-it
Hit
http://archive.ubuntu.com jaunty-proposed Release.gpg
Ign
http://archive.ubuntu.com jaunty-proposed/main Translation-it
Ign
http://archive.ubuntu.com jaunty-proposed/universe Translation-it
Ign
http://archive.ubuntu.com jaunty-proposed/restricted Translation-it
Ign
http://archive.ubuntu.com jaunty-proposed/multiverse Translation-it
Hit
http://archive.ubuntu.com jaunty-backports Release.gpg
Ign
http://archive.ubuntu.com jaunty-backports/main Translation-it
Ign
http://archive.ubuntu.com jaunty-backports/universe Translation-it
Ign
http://archive.ubuntu.com jaunty-backports/restricted Translation-it
Ign
http://archive.ubuntu.com jaunty-backports/multiverse Translation-it
Hit
http://archive.ubuntu.com jaunty Release
Hit
http://archive.ubuntu.com jaunty-updates Release
Hit
http://archive.ubuntu.com jaunty-security Release
Hit
http://archive.ubuntu.com jaunty-proposed Release
Hit
http://archive.ubuntu.com jaunty-backports Release
Hit
http://archive.ubuntu.com jaunty/main Packages
Hit
http://archive.ubuntu.com jaunty/universe Packages
Hit
http://archive.ubuntu.com jaunty/restricted Packages
Hit
http://archive.ubuntu.com jaunty/multiverse Packages
Hit
http://archive.ubuntu.com jaunty/universe Sources
Hit
http://archive.ubuntu.com jaunty/multiverse Sources
Hit
http://archive.ubuntu.com jaunty-updates/main Packages
Hit
http://archive.ubuntu.com jaunty-updates/universe Packages
Hit
http://archive.ubuntu.com jaunty-updates/restricted Packages
Hit
http://archive.ubuntu.com jaunty-updates/multiverse Packages
Hit
http://archive.ubuntu.com jaunty-updates/main Sources
Hit
http://archive.ubuntu.com jaunty-updates/universe Sources
Hit
http://archive.ubuntu.com jaunty-updates/restricted Sources
Hit
http://archive.ubuntu.com jaunty-updates/multiverse Sources
Hit
http://archive.ubuntu.com jaunty-security/main Packages
Hit
http://archive.ubuntu.com jaunty-security/universe Packages
Hit
http://archive.ubuntu.com jaunty-security/restricted Packages
Hit
http://archive.ubuntu.com jaunty-security/multiverse Packages
Hit
http://archive.ubuntu.com jaunty-security/main Sources
Hit
http://archive.ubuntu.com jaunty-security/universe Sources
Hit
http://archive.ubuntu.com jaunty-security/restricted Sources
Hit
http://archive.ubuntu.com jaunty-security/multiverse Sources
Hit
http://archive.ubuntu.com jaunty-proposed/main Packages
Hit
http://archive.ubuntu.com jaunty-proposed/universe Packages
Hit
http://archive.ubuntu.com jaunty-proposed/restricted Packages
Hit
http://archive.ubuntu.com jaunty-proposed/multiverse Packages
Hit
http://archive.ubuntu.com jaunty-proposed/main Sources
Hit
http://archive.ubuntu.com jaunty-proposed/universe Sources
Hit
http://archive.ubuntu.com jaunty-proposed/restricted Sources
Hit
http://archive.ubuntu.com jaunty-proposed/multiverse Sources
Hit
http://archive.ubuntu.com jaunty-backports/main Packages
Hit
http://archive.ubuntu.com jaunty-backports/universe Packages
Hit
http://archive.ubuntu.com jaunty-backports/restricted Packages
Hit
http://archive.ubuntu.com jaunty-backports/multiverse Packages
Hit
http://archive.ubuntu.com jaunty-backports/main Sources
Hit
http://archive.ubuntu.com jaunty-backports/universe Sources
Hit
http://archive.ubuntu.com jaunty-backports/restricted Sources
Hit
http://archive.ubuntu.com jaunty-backports/multiverse Sources
Building new list of packages... [done]
Building new list of available updates... [done]
Building new list of watched packages... [done]
Building list of outdated packages... [done]
No new updates.
No new or removed packages.
No news in watched packages.
No outdated packages.
Lettura della lista dei pacchetti in corso... Fatto
gabriele@dragon:~$