O que substituir raring-backports?

Question

Eu tenho problemas quando faço alguma atualização. O problema é que o raring-backports não está disponível no link :

Err http://ftp.iinet.net.au raring-backports/main amd64 Packages                
  404  Not Found
Err http://ftp.iinet.net.au raring-backports/restricted amd64 Packages          
  404  Not Found
Err http://ftp.iinet.net.au raring-backports/universe amd64 Packages            
  404  Not Found
Get: 18 http://ppa.launchpad.net trusty/main i386 Packages [5,636 B]            
Ign http://extras.ubuntu.com trusty/main Translation-en_AU                      
Err http://ftp.iinet.net.au raring-backports/main i386 Packages                 
  404  Not Found
Err http://ftp.iinet.net.au raring-backports/restricted i386 Packages           
  404  Not Found
Err http://ftp.iinet.net.au raring-backports/universe i386 Packages             
  404  Not Found

Por esse motivo, recebi estas mensagens de erro:

W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/main/binary-amd64/Packages: 404  Not Found
W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/restricted/binary-amd64/Packages: 404  Not Found
W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/universe/binary-amd64/Packages: 404  Not Found
W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/main/binary-i386/Packages: 404  Not Found
W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/restricted/binary-i386/Packages: 404  Not Found
W: Failed to fetch http://ftp.iinet.net.au/pub/ubuntu/dists/raring-backports/universe/binary-i386/Packages: 404  Not Found'

Eu verifiquei no meu navegador que esses URLs não existem. Então, alguém sabe que outros repositórios podem substituí-los?

Talvez seja bom informar que estou usando o lubuntu 14.04:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04 LTS
Release:    14.04
Codename:   trusty

E a linha relevante em source.list:

deb http://ftp.iinet.net.au/pub/ubuntu/ raring-backports main restricted universe

    

Answer 1

raring-backports é para o Ubuntu 13.04 "Raring Ringtail" para que você não precise mais dele.

Para 14.04 é trusty-backports :

deb http://ftp.iinet.net.au/pub/ubuntu/ trusty-backports main restricted universe

Se você já tem uma entrada para trusty-backports , pode remover a linha de raring-backports