Não Consigo istalar nada no ubuntu 11.10

[HugoMoura]

Tento atualizar, instalar  pelo Central de Programas do Ubuntu, mas naum consigo, alguns pede para usar a fonte universe mais da erro...
aparece assim :

Falha ao baixar informações do repositório
verificar sua conexão com a internet

W:GPG error: http://packages.medibuntu.org oneiric InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/Release.gpg  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/Release.gpg  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/Release.gpg  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/source/Sources  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/source/Sources  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/source/Sources  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/source/Sources  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/binary-i386/Packages  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/binary-i386/Packages  Connection failed [IP: 91.189.88.29 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/binary-i386/Packages  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/binary-i386/Packages  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/source/Sources  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/source/Sources  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/source/Sources  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/source/Sources  Connection failed [IP: 91.189.88.26 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/binary-i386/Packages  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/binary-i386/Packages  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/binary-i386/Packages  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/binary-i386/Packages  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/source/Sources  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/source/Sources  Connection failed [IP: 91.189.88.23 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/source/Sources  Connection failed [IP: 91.189.92.193 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/source/Sources  Connection failed [IP: 91.189.92.193 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-i386/Packages  Connection failed [IP: 91.189.92.189 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/binary-i386/Packages  Connection failed [IP: 91.189.92.184 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/binary-i386/Packages  Connection failed [IP: 91.189.92.193 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-i386/Packages  Connection failed [IP: 91.189.92.184 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/main/i18n/Translation-en  Connection failed [IP: 91.189.92.182 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/multiverse/i18n/Translation-en  Connection failed [IP: 91.189.92.182 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/restricted/i18n/Translation-en  Connection failed [IP: 91.189.92.182 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric/universe/i18n/Translation-en  Connection failed [IP: 91.189.92.180 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/main/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/multiverse/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/restricted/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-updates/universe/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/main/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/restricted/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, W:Failed to fetch http://archive.ubuntu.com/ubuntu/dists/oneiric-security/universe/i18n/Translation-en  Connection failed [IP: 91.189.92.177 80]
, E:Some index files failed to download. They have been ignored, or old ones used instead.

como resolverr ?/
minha list  aii  pra ver se algum erro  . ...   me ajudem

# deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release i386 (20111012)]/ oneiric main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu oneiric restricted main
deb-src http://archive.ubuntu.com/ubuntu oneiric main restricted

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

## 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://archive.ubuntu.com/ubuntu oneiric-security main restricted
deb-src http://archive.ubuntu.com/ubuntu oneiric-security main restricted
deb http://archive.ubuntu.com/ubuntu oneiric-security universe
deb-src http://archive.ubuntu.com/ubuntu oneiric-security universe
deb http://archive.ubuntu.com/ubuntu oneiric-security multiverse
deb-src http://archive.ubuntu.com/ubuntu oneiric-security multiverse

## Uncomment the following two lines to add software from 'backports'
## 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 oneiric partner
# deb-src http://archive.canonical.com/ubuntu oneiric partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu oneiric main
# deb-src http://extras.ubuntu.com/ubuntu oneiric main
# deb http://archive.ubuntu.com/ubuntu oneiric-proposed restricted main multiverse universe

esperando resposta

[agente100gelo]

Tente Central de Programas > Canal do Softwares > Editar > Baixar de > Brasil.

[Tota]

Ola

Dando um ping para os repositorios recebi resposta que estão funcionando normalmente.

Ou voce altera os seus repositórios de servidor principal para outro mais proximo a voce

Ou veja se voce tem alguma regra de firewall bloqueando estes endereços.

[]'s