Erro de atualização do Synaptic

[felipe_castro]

Olá pessoal, sou novo por aqui!

não conheço muito bem o sistema, mas estou muito satisfeito.
uso o ubuntu 10.04
porém um erro me impede de recarregar o synaptic


Falhou ao buscar http://ppa.launchpad.net/user/ppa/ubuntu/dists/lucid/main/binary-amd64/Packages.gz  404  Not Found
Alguns arquivos de índice falharam para baixar, eles foram ignorados ou os antigos foram usados no lugar.

minha source list

# deb cdrom:[Ubuntu 10.04 LTS _Lucid Lynx_ - Release amd64 (20100429)]/ lucid main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.


deb http://mirror.globo.com/ubuntu/archive/ lucid main restricted
deb-src http://mirror.globo.com/ubuntu/archive/ lucid main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://mirror.globo.com/ubuntu/archive/ lucid-updates main restricted
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://mirror.globo.com/ubuntu/archive/ lucid universe
deb-src http://mirror.globo.com/ubuntu/archive/ lucid universe
deb http://mirror.globo.com/ubuntu/archive/ lucid-updates universe
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://mirror.globo.com/ubuntu/archive/ lucid multiverse
deb-src http://mirror.globo.com/ubuntu/archive/ lucid multiverse
deb http://mirror.globo.com/ubuntu/archive/ lucid-updates multiverse
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://mirror.globo.com/ubuntu/archive/ lucid-backports main restricted universe multiverse
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu lucid partner
deb-src http://archive.canonical.com/ubuntu lucid partner

deb http://mirror.globo.com/ubuntu/archive/ lucid-security main restricted
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-security main restricted
deb http://mirror.globo.com/ubuntu/archive/ lucid-security universe
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-security universe
deb http://mirror.globo.com/ubuntu/archive/ lucid-security multiverse
deb http://archive.canonical.com/ lucid partner
deb-src http://mirror.globo.com/ubuntu/archive/ lucid-security multiverse
deb http://mirror.globo.com/ubuntu/archive/ lucid-proposed restricted main multiverse universe


oq pode estar errado??

Obrigado pelo espaço

[overlock@]

Tente usar outro servidor, tente o principal

Vá em >>> Sistema>>>  Adminstração >>> Canais de Software e mude para principal

[felipe_castro]

Tente usar outro servidor, tente o principal

Vá em >>> Sistema>>>  Adminstração >>> Canais de Software e mude para principal

=/
Fiz exatamente como descrito mas a mensagem continua a aparecer quando tento atualizar o sistema

Falhou ao buscar http://ppa.launchpad.net/user/ppa/ubuntu/dists/lucid/main/binary-amd64/Packages.gz  404  Not Found
Alguns arquivos de índice falharam para baixar, eles foram ignorados ou os antigos foram usados no lugar.

[overlock@]

Você alterou algo na sua sources.list ? sugiro que coloque o cd de instalação no modo live-cd, vá até a sources.list  >> cd  /etc/apt/sources.list e copie para sua partição ou para um pendrive, pois essa sua sources está estranha ...