suemilio@LinuX:~$ sudo apt-get upgrade
Password:
A Ler Listas de Pacotes... Pronto
Construindo Árvore de Dependências... Pronto
0 pacotes actualizados, 0 pacotes novos instalados, 0 a remover e 0 não actualizados.
emilio@LinuX:~$ sudo apt-get update
Obter:1 http://archive.ubuntu.com dapper Release.gpg [189B]
Obter:2 http://archive.ubuntu.com dapper-updates Release.gpg [189B]
Obter:3 http://security.ubuntu.com dapper-security Release.gpg [189B]
Obter:4 http://mirror.ubuntulinux.nl breezy-seveas Release.gpg [309B]
Obter:5 http://archive.ubuntu.com dapper-backports Release.gpg [189B]
Atingido http://archive.ubuntu.com dapper Release
Obter:6 http://security.ubuntu.com dapper-security Release [30,9kB]
Obter:7 http://archive.ubuntu.com dapper-updates Release [30,9kB]
Atingido http://mirror.ubuntulinux.nl breezy-seveas Release
Err http://mirror.ubuntulinux.nl breezy-seveas Release
Obter:8 http://mirror.ubuntulinux.nl breezy-seveas Release [10,9kB]
Obter:9 http://archive.ubuntu.com dapper-backports Release [19,6kB]
Ign http://mirror.ubuntulinux.nl breezy-seveas Release
Atingido http://archive.ubuntu.com dapper/main Packages
Obter:10 http://archive.ubuntu.com dapper/restricted Packages [4408B]
Atingido http://archive.ubuntu.com dapper/universe Packages
Obter:11 http://archive.ubuntu.com dapper/multiverse Packages [85,8kB]
Ign http://mirror.ubuntulinux.nl breezy-seveas/all Packages
Obter:12 http://br.archive.ubuntu.com dapper Release.gpg [189B]
Obter:13 http://br.archive.ubuntu.com dapper-updates Release.gpg [189B]
Err http://mirror.ubuntulinux.nl breezy-seveas/all Packages
404 Not Found
Obter:14 http://br.archive.ubuntu.com dapper-backports Release.gpg [189B]
Atingido http://br.archive.ubuntu.com dapper Release
Obter:15 http://br.archive.ubuntu.com dapper-updates Release [30,9kB]
Obter:16 http://archive.ubuntu.com dapper-updates/main Packages [37,6kB]
Obter:17 http://br.archive.ubuntu.com dapper-backports Release [19,6kB]
Obter:18 http://security.ubuntu.com dapper-security/main Packages [24,9kB]
Obter:19 http://archive.ubuntu.com dapper-updates/restricted Packages [14B]
Obter:20 http://archive.ubuntu.com dapper-updates/universe Packages [8369B]
Obter:21 http://archive.ubuntu.com dapper-updates/multiverse Packages [14B]
Atingido http://br.archive.ubuntu.com dapper/main Packages
Obter:22 http://br.archive.ubuntu.com dapper/restricted Packages [4408B]
Obter:23 http://security.ubuntu.com dapper-security/restricted Packages [4077B]
Atingido http://br.archive.ubuntu.com dapper/main Sources
Obter:24 http://br.archive.ubuntu.com dapper/restricted Sources [1478B]
Atingido http://br.archive.ubuntu.com dapper/universe Packages
Obter:25 http://security.ubuntu.com dapper-security/main Sources [6227B]
Obter:26 http://security.ubuntu.com dapper-security/restricted Sources [974B]
Obter:27 http://security.ubuntu.com dapper-security/universe Packages [5275B]
Obter:28 http://security.ubuntu.com dapper-security/universe Sources [639B]
Obter:29 http://security.ubuntu.com dapper-security/main Packages [24,9kB]
Atingido http://br.archive.ubuntu.com dapper/universe Sources
Obter:30 http://br.archive.ubuntu.com dapper-updates/main Packages [37,6kB]
Obter:31 http://security.ubuntu.com dapper-security/restricted Packages [4077B]
Obter:32 http://security.ubuntu.com dapper-security/universe Packages [5275B]
Obter:33 http://br.archive.ubuntu.com dapper-updates/restricted Packages [14B]
Obter:34 http://br.archive.ubuntu.com dapper-updates/main Sources [22,1kB]
Obter:35 http://security.ubuntu.com dapper-security/multiverse Packages [1683B]
Obter:36 http://br.archive.ubuntu.com dapper-updates/restricted Sources [14B]
Obter:37 http://br.archive.ubuntu.com dapper-backports/main Packages [14B]
Obter:38 http://br.archive.ubuntu.com dapper-backports/restricted Packages [14B]Obter:39 http://br.archive.ubuntu.com dapper-backports/universe Packages [14B]
Obter:40 http://br.archive.ubuntu.com dapper-backports/multiverse Packages [14B]Obter:41 http://br.archive.ubuntu.com dapper-backports/main Sources [14B]
Obter:42 http://archive.ubuntu.com dapper-backports/main Packages [14B]
Obter:43 http://archive.ubuntu.com dapper-backports/restricted Packages [14B]
Obter:44 http://archive.ubuntu.com dapper-backports/universe Packages [14B]
Obter:45 http://archive.ubuntu.com dapper-backports/multiverse Packages [14B]
Obter:46 http://br.archive.ubuntu.com dapper-backports/restricted Sources [14B]
Obter:47 http://br.archive.ubuntu.com dapper-backports/universe Sources [14B]
Obter:48 http://br.archive.ubuntu.com dapper-backports/multiverse Sources [14B]
Obtidos 424kB em 25s (16,6kB/s)
Falha ao obter http://mirror.ubuntulinux.nl/dists/breezy-seveas/all/binary-amd64/Packages.gz 404 Not Found
A Ler Listas de Pacotes... Pronto
W: GPG error: http://mirror.ubuntulinux.nl breezy-seveas Release: As seguintes assinaturas não puderam ser verificadas porque a chave pública não está disponível: NO_PUBKEY 49A120FD1135D466
W: Duplicate sources.list entry http://security.ubuntu.com dapper-security/main Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_dapper-security_main_binary-amd64_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com dapper-security/restricted Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_dapper-security_restricted_binary-amd64_Packages)
W: Duplicate sources.list entry http://security.ubuntu.com dapper-security/universe Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_dapper-security_universe_binary-amd64_Packages)
W: Você terá que executar apt-get update para corrigir estes problemas
E: Falhou o download de alguns ficheiros de índice, foram ignorados ou os antigos foram usados em seu lugar.
emilio@LinuX:~$ sudo apt-get update
Obter:1 http://br.archive.ubuntu.com dapper Release.gpg [189B]
Obter:2 http://br.archive.ubuntu.com dapper-updates Release.gpg [189B]
Atingido http://br.archive.ubuntu.com dapper Release
Obter:3 http://security.ubuntu.com dapper-security Release.gpg [189B]
Obter:4 http://archive.ubuntu.com dapper Release.gpg [189B]
Atingido http://br.archive.ubuntu.com dapper-updates Release
Atingido http://br.archive.ubuntu.com dapper/main Sources
Atingido http://br.archive.ubuntu.com dapper/restricted Sources
Atingido http://security.ubuntu.com dapper-security Release
Atingido http://archive.ubuntu.com dapper Release
Atingido http://br.archive.ubuntu.com dapper-updates/main Sources
Atingido http://br.archive.ubuntu.com dapper-updates/restricted Sources
Atingido http://security.ubuntu.com dapper-security/main Packages
Atingido http://archive.ubuntu.com dapper/universe Packages
Atingido http://security.ubuntu.com dapper-security/restricted Packages
Atingido http://security.ubuntu.com dapper-security/main Sources
Atingido http://security.ubuntu.com dapper-security/restricted Sources
Ign http://packages.freecontrib.org breezy Release.gpg
Ign http://repository.debuntu.org dapper Release.gpg
Ign http://packages.freecontrib.org breezy Release
Obter:5 http://repository.debuntu.org dapper Release [2356B]
Ign http://packages.freecontrib.org breezy/free Packages
Ign http://packages.freecontrib.org breezy/non-free Packages
Ign http://repository.debuntu.org dapper/multiverse Packages
Err http://packages.freecontrib.org breezy/free Packages
404 Not Found
Obter:6 http://repository.debuntu.org dapper/multiverse Sources [1900B]
Err http://packages.freecontrib.org breezy/non-free Packages
404 Not Found
Err http://repository.debuntu.org dapper/multiverse Packages
404 Not Found
Atingido http://archive.ubuntu.com dapper/main Packages
Atingido http://archive.ubuntu.com dapper/restricted Packages
Atingido http://archive.ubuntu.com dapper/multiverse Packages
Obtidos 4260B em 6s (638B/s)
Falha ao obter http://packages.freecontrib.org/ubuntu/plf/dists/breezy/free/binary-amd64/Packages.gz 404 Not Found
Falha ao obter http://packages.freecontrib.org/ubuntu/plf/dists/breezy/non-free/binary-amd64/Packages.gz 404 Not Found
Falha ao obter http://repository.debuntu.org/dists/dapper/multiverse/binary-amd64/Packages.gz 404 Not Found
A Ler Listas de Pacotes... Pronto
E: Falhou o download de alguns ficheiros de índice, foram ignorados ou os antigos foram usados em seu lugar.
Bom eu deixei o meu igaul ao do Carlos Araujo e deu no que deu ai em cima.
abraços.