Não consigo atualizar

[bedego]

Toda vez que tento atualizar aparece essa msg
Um problema impossível de se resolver ocorreu enquanto inicializava as informações do pacote.

Por favor relate este erro do pacote 'update-manager' e inclua a seguinte mensagem de erro:

'E:Tipo 'ain' não é conhecido na linha 1 na lista de fontes /etc/apt/sources.list.d/libreoffice-ppa-natty.list'

no gedit /etc/apt/sources.list aparece essa msg

# deb cdrom:[Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)]/ natty 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 natty main restricted
deb-src http://archive.ubuntu.com/ubuntu natty main restricted

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

deb http://archive.ubuntu.com/ubuntu natty-security main restricted
deb-src http://archive.ubuntu.com/ubuntu natty-security main restricted
deb http://archive.ubuntu.com/ubuntu natty-security universe
deb-src http://archive.ubuntu.com/ubuntu natty-security universe
deb http://archive.ubuntu.com/ubuntu natty-security multiverse
deb-src http://archive.ubuntu.com/ubuntu natty-security 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 natty partner
# deb-src http://archive.canonical.com/ubuntu natty 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 natty main
deb-src http://extras.ubuntu.com/ubuntu natty main

[Paulo Correa]

Tente
sudo rm /var/lib/apt/lists/* ; sudo rm /var/lib/apt/lists/partial/* ; sudo apt-get clean ; sudo apt-get -f install ; sudo apt-get update

Um comando só

[bedego]

Tente
sudo rm /var/lib/apt/lists/* ; sudo rm /var/lib/apt/lists/partial/* ; sudo apt-get clean ; sudo apt-get -f install ; sudo apt-get update

Um comando só

não resolveu

[Paulo Correa]

Por favor relate este erro do pacote 'update-manager' e inclua a seguinte mensagem de erro:

'E:Tipo 'ain' não é conhecido na linha 1 na lista de fontes /etc/apt/sources.list.d/libreoffice-ppa-natty.list'

no gedit /etc/apt/sources.list aparece essa msg

# deb cdrom:[Ubuntu 11.04 _Natty Narwhal_ - Release i386 (20110427.1)]/ natty 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 natty main restricted
deb-src http://archive.ubuntu.com/ubuntu natty main restricted

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

deb http://archive.ubuntu.com/ubuntu natty-security main restricted
deb-src http://archive.ubuntu.com/ubuntu natty-security main restricted
deb http://archive.ubuntu.com/ubuntu natty-security universe
deb-src http://archive.ubuntu.com/ubuntu natty-security universe
deb http://archive.ubuntu.com/ubuntu natty-security multiverse
deb-src http://archive.ubuntu.com/ubuntu natty-security 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 natty partner
# deb-src http://archive.canonical.com/ubuntu natty 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 natty main
deb-src http://extras.ubuntu.com/ubuntu natty main

Prestando mais atenção no seu problema note o que está informando não é exatamente um erro, foi alguma coisa que você tentou adicionar ou foi adicionado por engano.

Bem mais aconselho a esperar uma dica de alguém mais experiente no assunto.

Boa sorte e até mais.