Comment 3 for bug 951970

Not being able to connect to the archive seems to be the start of the problem:

Mar 11 02:34:58 ubuntu apt-setup: warning: /usr/lib/ubiquity/apt-setup/generators/40cdrom returned error code 1; discarding output
Mar 11 02:34:58 ubuntu choose-mirror[17741]: INFO: base system installable from CD; skipping mirror check
Mar 11 02:34:58 ubuntu choose-mirror[17741]: INFO: base system installable from CD; skipping architecture check
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise InRelease
Mar 11 02:34:59 ubuntu in-target:
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise-updates InRelease
Mar 11 02:34:59 ubuntu in-target:
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise-backports InRelease
Mar 11 02:34:59 ubuntu in-target:
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise Release.gpg
Mar 11 02:34:59 ubuntu in-target: Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise-updates Release.gpg
Mar 11 02:34:59 ubuntu in-target: Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:34:59 ubuntu in-target: Err http://us.archive.ubuntu.com precise-backports Release.gpg
Mar 11 02:34:59 ubuntu in-target: Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:34:59 ubuntu in-target: Reading package lists...
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise/InRelease
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg Could not resolve 'us.archive.ubuntu.com'
Mar 11 02:35:00 ubuntu in-target:
Mar 11 02:35:00 ubuntu in-target: W: Some index files failed to download. They have been ignored, or old ones used instead.
Mar 11 02:35:01 ubuntu in-target: Reading package lists...