Linux Mint updates not working, why?

Question

linux

sudo apt-get upgrade

Ош security.ubuntu.com/ubuntu quantal-security/main libdbus-1-3 amd64 1.6.4-1ubuntu4.1
404 Not Found [IP: 91.189.88.149 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main mountall amd64 2.42ubuntu0.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libdbus-glib-1-2 i386 0.100-1ubuntu0.1
404 Not Found [IP: 91.189.91.15 80]
Ош security.ubuntu.com/ubuntu quantal-security/main libdbus-glib-1-2 i386 0.100-1ubuntu0.1
404 Not Found [IP: 91.189.88.149 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libdbus-glib-1-2 amd64 0.100-1ubuntu0.1
404 Not Found [IP: 91.189.91.15 80]
Ош security.ubuntu.com/ubuntu quantal-security/main libdbus-glib-1-2 amd64 0.100-1ubuntu0.1
404 Not Found [IP: 91.189.88.149 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-svg i386 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-svg amd64 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-opengl i386 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-opengl amd64 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-sql-sqlite amd64 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-sql-mysql i386 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-qt3support i386 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Ош archive.ubuntu.com/ubuntu quantal-updates/main libqt4-qt3support amd64 4:4.8.3+dfsg-0ubuntu3.4
404 Not Found [IP: 91.189.91.15 80]
Не удалось получить archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg... 404 Not Found [IP: 91.189.91.15 80]
Не удалось получить archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg... 404 Not Found [IP: 91.189.91.15 80]
Не удалось получить security.ubuntu.com/ubuntu/pool/main/x/xserver-xor... 404 Not Found [IP: 91.189.88.149 80]

sudo apt-get update

[email protected] ~ $ sudo apt-get update
В кэше dl.google.com stable Release.gpg
Игн ppa.launchpad.net quantal Release.gpg
В кэше archive.canonical.com quantal Release.gpg
Игн security.ubuntu.com quantal-security Release.gpg
В кэше dl.google.com stable Release
В кэше ppa.launchpad.net quantal Release.gpg
В кэше archive.canonical.com quantal Release
Игн security.ubuntu.com quantal-security Release
В кэше dl.google.com stable/main amd64 Packages
Игн ppa.launchpad.net quantal Release
В кэше archive.canonical.com quantal/partner amd64 Packages
W: Не удалось получить packages.medibuntu.org/dists/quantal/non-free/i18n... Что-то странное произошло при определении «packages.medibuntu.org:http» (-5 - С именем узла не связано ни одного адреса)
E: Некоторые индексные файлы не скачались. Они были проигнорированы или вместо них были использованы старые версии.
[email protected] ~ $

It has been standing for more than a year and has long ceased to be updated, something has broken. Part of the logs was cut out due to restrictions on the length of the message.

Answer 1

Either you update regularly (once a month), or install a new one every release. Here they will switch somewhere to python 3 or some major version will apnetize and get into it.

Answer 2

Well, keep an eye on the dates. 12.10 has not been supported for many months now - turnips have been moved to the archives, but there are no updates and there will not be.

Answer 3

The problem is not with you, but with the owners of the domain packages.medibuntu.org
At the moment it does not resolve: www.dnswatch.info/dns/dnslookup?la=en&host=package...