ssh-1138@ssh1138-AO722:~$ sudo apt-get update
Ign http://extras.ubuntu.com precise InRelease
Get:1 http://extras.ubuntu.com precise Release.gpg [72 B]
Ign http://security.ubuntu.com precise-security InRelease
Get:2 http://extras.ubuntu.com precise Release [11.9 kB]
Ign http://archive.canonical.com precise InRelease
Err http://extras.ubuntu.com precise Release

Get:3 http://security.ubuntu.com precise-security Release.gpg [198 B]
Ign http://ppa.launchpad.net precise InRelease
Ign http://ppa.launchpad.net precise InRelease
Ign http://ppa.launchpad.net precise InRelease
Get:4 http://archive.canonical.com precise Release.gpg [198 B]
Get:5 http://security.ubuntu.com precise-security Release [49.6 kB]
Ign http://us.archive.ubuntu.com precise InRelease
Ign http://us.archive.ubuntu.com precise-updates InRelease
Ign http://us.archive.ubuntu.com precise-backports InRelease
Hit http://ppa.launchpad.net precise Release.gpg
Hit http://archive.canonical.com precise Release
Get:6 http://ppa.launchpad.net precise Release.gpg [316 B]
Ign http://archive.canonical.com precise Release
Hit http://ppa.launchpad.net precise Release.gpg
Ign http://archive.canonical.com precise/partner amd64 Packages/DiffIndex
Get:7 http://us.archive.ubuntu.com precise Release.gpg [198 B]
Get:8 http://us.archive.ubuntu.com precise-updates Release.gpg [198 B]
Hit http://ppa.launchpad.net precise Release
Err http://security.ubuntu.com precise-security Release

Ign http://archive.canonical.com precise/partner i386 Packages/DiffIndex
Ign http://archive.canonical.com precise/partner TranslationIndex
Hit http://ppa.launchpad.net precise Release
Ign http://ppa.launchpad.net precise Release
Hit http://archive.canonical.com precise/partner amd64 Packages
Hit http://archive.canonical.com precise/partner i386 Packages
Get:9 http://us.archive.ubuntu.com precise-backports Release.gpg [198 B]
Get:10 http://us.archive.ubuntu.com precise Release [49.6 kB]
Hit http://ppa.launchpad.net precise Release
Hit http://ppa.launchpad.net precise/main Sources
Hit http://ppa.launchpad.net precise/main amd64 Packages
Hit http://ppa.launchpad.net precise/main i386 Packages
Ign http://ppa.launchpad.net precise/main TranslationIndex
Ign http://ppa.launchpad.net precise/main Sources/DiffIndex
Ign http://ppa.launchpad.net precise/main amd64 Packages/DiffIndex
Ign http://ppa.launchpad.net precise/main i386 Packages/DiffIndex
Ign http://ppa.launchpad.net precise/main TranslationIndex
Hit http://ppa.launchpad.net precise/main Sources
Hit http://ppa.launchpad.net precise/main amd64 Packages
Hit http://ppa.launchpad.net precise/main i386 Packages
Ign http://ppa.launchpad.net precise/main TranslationIndex
Get:11 http://us.archive.ubuntu.com precise-updates Release [49.6 kB]
Err http://us.archive.ubuntu.com precise Release

Hit http://ppa.launchpad.net precise/main Sources
Hit http://ppa.launchpad.net precise/main amd64 Packages
Hit http://ppa.launchpad.net precise/main i386 Packages
Get:12 http://us.archive.ubuntu.com precise-backports Release [49.6 kB]
Err http://us.archive.ubuntu.com precise-updates Release

Ign http://archive.canonical.com precise/partner Translation-en_US
Err http://us.archive.ubuntu.com precise-backports Release

Ign http://archive.canonical.com precise/partner Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Ign http://ppa.launchpad.net precise/main Translation-en_US
Ign http://ppa.launchpad.net precise/main Translation-en
Fetched 200 kB in 1s (112 kB/s)
Reading package lists... Done
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://extras.ubuntu.com precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192

W: GPG error: http://archive.canonical.com precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://security.ubuntu.com precise-security Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5

W: GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A5D712AEE06E6293
W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://us.archive.ubuntu.com precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://us.archive.ubuntu.com precise-updates Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5

W: A error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://us.archive.ubuntu.com precise-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 40976EAF437D05B5

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise/Release

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-updates/Release

W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/Release

W: Some index files failed to download. They have been ignored, or old ones used instead.
ssh-1138@ssh1138-AO722:~$