Erro na atualização de softwares

[polidori]

Toda vez que verifico se há atualizações de software, me dá o seguinte erro:
Falha ao baixar informações do repositório
e na caixa de detalhes diz:
W:Failed to fetch http://br.archive.ubuntu.com/ubuntu/dists/precise/Release  Unable to find expected entry 'commercial/source/Sources' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://br.archive.ubuntu.com/ubuntu/dists/precise-updates/Release  Unable to find expected entry 'commercial/source/Sources' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://br.archive.ubuntu.com/ubuntu/dists/precise-backports/Release  Unable to find expected entry 'commercial/source/Sources' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://br.archive.ubuntu.com/ubuntu/dists/precise-security/Release  Unable to find expected entry 'commercial/source/Sources' in Release file (Wrong sources.list entry or malformed file)
, E:Some index files failed to download. They have been ignored, or old ones used instead.

O pior que diz que foi atualizado há 101 dias, desde então não consigo!

[clodoaldops]

Qual ubuntu vc está usando?

[Tota]

W:Failed to fetch http://br.archive.ubuntu.com/ubuntu/dists/precise/Release  Unable to find expected entry 'commercial/source/Sources' in Release file (Wrong sources.list entry or malformed file)

Ola

São repositórios do precise pangolin 12.04

Poste o resultado de

Código: [Selecionar]

sudo gedit /etc/apt/sources.list
Basta editar e remover os "commercial" que não existem.

[]'s

[polidori]

# deb cdrom:[Ubuntu 12.04.3 LTS _Precise Pangolin_ - Release i386 (20130820.1)]/ precise main restricted

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

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

## 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://br.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://br.archive.ubuntu.com/ubuntu/ precise universe
deb http://br.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-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://br.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://br.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://br.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-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://br.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse commercial
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-backports main restricted universe multiverse commercial

deb http://br.archive.ubuntu.com/ubuntu/ precise-security main restricted commercial
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-security main restricted commercial
deb http://br.archive.ubuntu.com/ubuntu/ precise-security universe
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-security universe
deb http://br.archive.ubuntu.com/ubuntu/ precise-security multiverse
deb-src http://br.archive.ubuntu.com/ubuntu/ precise-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 precise partner
deb-src http://archive.canonical.com/ubuntu precise 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 precise main
deb-src http://extras.ubuntu.com/ubuntu precise main

[polidori]

Retirei todas as linhas que tinham commercial e deu certo
o/