Error de update-manager

Imagen de Matilde
0 puntos

desde qeu hice una instalación no e podido actualizar ni ultizar el centro de software, les pego el mensaje y "sources.list". gracias de ante mano
--------------------
No se ha podido inicializar la información de los paquetes

Ha ocurrido un problema imposible de corregir cuando se inicializaba la información de los paquetes.

Por favor, informe de esto como un fallo en el paquete «update-manager» e incluya el siguiente mensaje de error:

'E:Línea 52 mal formada en la lista de orígenes /etc/apt/sources.list (análisis de dist)'
-----------------------------------

# deb cdrom:[Ubuntu 11.10 _Oneiric Ocelot_ - Release i386 (20111012)]/ oneiric main restricted
deb-src http://archive.ubuntu.com/ubuntu oneiric main restricted #Added by software-properties

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric main restricted
deb-src http://ar.archive.ubuntu.com/ubuntu/ oneiric restricted main multiverse universe #Added by software-properties

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

## 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://ar.archive.ubuntu.com/ubuntu/ oneiric universe
deb http://ar.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://ar.archive.ubuntu.com/ubuntu/ oneiric multiverse
deb http://ar.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://ar.archive.ubuntu.com/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://ar.archive.ubuntu.com/ubuntu/ oneiric-backports main restricted universe multiverse #Added by software-properties

deb http://security.ubuntu.com/ubuntu oneiric-security main restricted
deb-src http://security.ubuntu.com/ubuntu oneiric-security restricted main multiverse universe #Added by software-properties
deb http://security.ubuntu.com/ubuntu oneiric-security universe
deb http://security.ubuntu.com/ubuntu oneiric-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 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.canonical.com/lucid partner
deb-src http://archive.canonical.com/lucid partner
deb http://archive.canonical.com/lucid partner
deb-src http://archive.canonical.com/lucid partner

Imagen de Gabriel_M
+1
0
-1

sources.list
sudo su
nano /etc/apt/sources.list

Y deja solo este contenido:

deb http://ar.archive.ubuntu.com/ubuntu/ oneiric main restricted
# deb-src http://ar.archive.ubuntu.com/ubuntu/ oneiric restricted main multiverse universe #Added by software-properties
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric-updates main restricted
# deb-src http://ar.archive.ubuntu.com/ubuntu/ oneiric-updates restricted main multiverse universe #Added by software-properties
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric universe
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric-updates universe
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric multiverse
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric-updates multiverse
deb http://ar.archive.ubuntu.com/ubuntu/ oneiric-backports main restricted universe multiverse
# deb-src http://ar.archive.ubuntu.com/ubuntu/ oneiric-backports main restricted universe multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu oneiric-security main restricted
# deb-src http://security.ubuntu.com/ubuntu oneiric-security restricted main multiverse universe #Added by software-properties
deb http://security.ubuntu.com/ubuntu oneiric-security universe
deb http://security.ubuntu.com/ubuntu oneiric-security multiverse
deb http://archive.canonical.com/ubuntu oneiric partner
# deb-src http://archive.canonical.com/ubuntu oneiric partner
deb http://extras.ubuntu.com/ubuntu oneiric main
# deb-src http://extras.ubuntu.com/ubuntu oneiric main

+1
0
-1