[ubuntu-ar] Error E.

[Ernesto]

Hola amigos
Necesito ayuda para solucionar un problema que se ha esparcido por
varias vías: ernesto en ernesto-desktop:~$ sudo apt-get install gnome-panel
[sudo] password for ernesto: 
E: Línea 57 mal formada en lista de fuentes /etc/apt/sources.list
(análisis de dist)
E: No se pudieron leer las listas de fuentes.
ernesto en ernesto-desktop:~$ sudo gedit /etc/apt/sources.list
Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve
property `GtkWidget::visited-link-color' of type `GdkColor' from rc file
value "((GString*) 0x837baa0)" of type `GString'
Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve
property `GtkWidget::visited-link-color' of type `GdkColor' from rc file
value "((GString*) 0x83b43a0)" of type `GString'
# deb cdrom:[Ubuntu 9.04 _Jaunty Jackalope_ - Release i386
(20090420.1)]/ jaunty main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade
to
# newer versions of the distribution.

deb http://ar.archive.ubuntu.com/ubuntu/ karmic main restricted
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-updates main restricted
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-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://ar.archive.ubuntu.com/ubuntu/ karmic universe
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic universe
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-updates universe
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-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/ karmic multiverse
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic multiverse
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-updates multiverse
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-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://ar.archive.ubuntu.com/ubuntu/ jaunty-backports main
restricted universe multiverse
deb-src http://ar.archive.ubuntu.com/ubuntu/ jaunty-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 jaunty partner
deb-src http://archive.canonical.com/ubuntu jaunty partner

deb http://ar.archive.ubuntu.com/ubuntu/ karmic-security main restricted
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-security main
restricted
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-security universe
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-security universe
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-security multiverse
deb-src http://ar.archive.ubuntu.com/ubuntu/ karmic-security multiverse
deb http://ppa.launchpad.net/tualatrix/ppa/ubuntu karmic main
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-proposed restricted main
multiverse universe
deb http://ar.archive.ubuntu.com/ubuntu/ karmic-backports restricted
main multiverse universe

Perdón, no se cómo adjuntar el sources.list

Gracias.Ernesto