Dunque, innanzitutto ho inserito il codice suggeritomi:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C3E18B20E435C74B
mi chiede la password, la inseirsco ed inizia a lavorare...
Poi, mi compare, nel terminale, questo:
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv-keys C3E18B20E435C74B
gpg: richiesta della chiave E435C74B dal server hkp keyserver.ubuntu.com
gpg: chiave E435C74B: "Kirya.net Debian packages verification key " non cambiata
gpg: Numero totale esaminato: 1
gpg: non modificate: 1
Quindi, dò un sudo apt-get update e compare ciò:
Scaricare:1
http://security.ubuntu.com lucid-security Release.gpg [198B]
Ign
http://security.ubuntu.com/ubuntu/ lucid-security/main Translation-it
Ign
http://security.ubuntu.com/ubuntu/ lucid-security/restricted Translation-it
Scaricare:2
http://archive.canonical.com lucid Release.gpg [198B]
Ign
http://archive.canonical.com/ lucid/partner Translation-it
Scaricare:3
http://ppa.launchpad.net lucid Release.gpg [307B]
Ign
http://ppa.launchpad.net/gm-notify-main ... pa/ubuntu/ lucid/main Translation-it
Ign
http://security.ubuntu.com/ubuntu/ lucid-security/universe Translation-it
Ign
http://security.ubuntu.com/ubuntu/ lucid-security/multiverse Translation-it
Scaricare:4
http://security.ubuntu.com lucid-security Release [44,7kB]
Ign
http://security.ubuntu.com lucid-security Release
Trovato
http://ppa.launchpad.net lucid Release
Scaricare:5
http://archive.canonical.com lucid Release [8215B]
Ign
http://ppa.launchpad.net lucid Release
Ign
http://archive.canonical.com lucid Release
Trovato
http://security.ubuntu.com lucid-security/main Packages
Trovato
http://ppa.launchpad.net lucid/main Packages
Trovato
http://archive.canonical.com lucid/partner Packages
Trovato
http://security.ubuntu.com lucid-security/restricted Packages
Trovato
http://security.ubuntu.com lucid-security/main Sources
Trovato
http://security.ubuntu.com lucid-security/restricted Sources
Trovato
http://security.ubuntu.com lucid-security/universe Packages
Trovato
http://security.ubuntu.com lucid-security/universe Sources
Trovato
http://security.ubuntu.com lucid-security/multiverse Packages
Trovato
http://security.ubuntu.com lucid-security/multiverse Sources
Scaricare:6
http://it.archive.ubuntu.com lucid Release.gpg [189B]
Trovato
http://it.archive.ubuntu.com/ubuntu/ lucid/main Translation-it
Trovato
http://it.archive.ubuntu.com/ubuntu/ lucid/restricted Translation-it
Trovato
http://it.archive.ubuntu.com/ubuntu/ lucid/universe Translation-it
Trovato
http://it.archive.ubuntu.com/ubuntu/ lucid/multiverse Translation-it
Scaricare:7
http://it.archive.ubuntu.com lucid-updates Release.gpg [198B]
Ign
http://it.archive.ubuntu.com/ubuntu/ lucid-updates/main Translation-it
Ign
http://it.archive.ubuntu.com/ubuntu/ lucid-updates/restricted Translation-it
Ign
http://it.archive.ubuntu.com/ubuntu/ lucid-updates/universe Translation-it
Ign
http://it.archive.ubuntu.com/ubuntu/ lucid-updates/multiverse Translation-it
Trovato
http://it.archive.ubuntu.com lucid Release
Ign
http://it.archive.ubuntu.com lucid Release
Scaricare:8
http://it.archive.ubuntu.com lucid-updates Release [44,7kB]
Ign
http://it.archive.ubuntu.com lucid-updates Release
Trovato
http://it.archive.ubuntu.com lucid/main Packages
Trovato
http://it.archive.ubuntu.com lucid/restricted Packages
Trovato
http://it.archive.ubuntu.com lucid/main Sources
Trovato
http://it.archive.ubuntu.com lucid/restricted Sources
Trovato
http://it.archive.ubuntu.com lucid/universe Packages
Trovato
http://it.archive.ubuntu.com lucid/universe Sources
Trovato
http://it.archive.ubuntu.com lucid/multiverse Packages
Trovato
http://it.archive.ubuntu.com lucid/multiverse Sources
Trovato
http://it.archive.ubuntu.com lucid-updates/main Packages
Trovato
http://it.archive.ubuntu.com lucid-updates/restricted Packages
Trovato
http://it.archive.ubuntu.com lucid-updates/main Sources
Trovato
http://it.archive.ubuntu.com lucid-updates/restricted Sources
Trovato
http://it.archive.ubuntu.com lucid-updates/universe Packages
Trovato
http://it.archive.ubuntu.com lucid-updates/universe Sources
Trovato
http://it.archive.ubuntu.com lucid-updates/multiverse Packages
Trovato
http://it.archive.ubuntu.com lucid-updates/multiverse Sources
Recuperati 1093B in 7s (156B/s)
Lettura elenco dei pacchetti... Fatto
W: Errore GPG:
http://security.ubuntu.com lucid-security Release: Le seguenti firme non sono state verificate perché la chiave pubblica non è disponibile: NO_PUBKEY 40976EAF437D05B5
W: Errore GPG:
http://ppa.launchpad.net lucid Release: Le seguenti firme non erano valide: BADSIG FD84B45E46D61392 Launchpad gm-notify PPA
W: Errore GPG:
http://archive.canonical.com lucid Release: Le seguenti firme non sono state verificate perché la chiave pubblica non è disponibile: NO_PUBKEY 40976EAF437D05B5
W: Errore GPG:
http://it.archive.ubuntu.com lucid Release: Le seguenti firme non sono state verificate perché la chiave pubblica non è disponibile: NO_PUBKEY 40976EAF437D05B5
W: Errore GPG:
http://it.archive.ubuntu.com lucid-updates Release: Le seguenti firme non sono state verificate perché la chiave pubblica non è disponibile: NO_PUBKEY 40976EAF437D05B5