¿Puedes enseñarnos tu sources.list?

Puedes dar mas datos? algo parecido puede pasar cuando intentas instalar paquetes en una red capada. Estas usando una red de tu empresa o algo similar? tal vez pase por un proxy y te cape?

blackhalo tiene razon. puedes mostrar sources.lst

Este es mi sources.list !!!!... Les agradezco mucho su atencion y su ayuda:

#
# deb cdrom: [Ubuntu-Server 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/$

#deb cdrom: [Ubuntu-Server 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/$
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

Deb http://archive.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
Deb-src http://archive.ubuntu.com/ubuntu/ maverick main restricted universe multiverse

## Major bug fix updates produced after the final release of the
## distribution.

deb http://archive.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-update main restricted universe multiverse

## 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/ maverick universe
deb-src http://archive.ubuntu.com/ubuntu/ maverick universe
deb http://archive.ubuntu.com/ubuntu/ maverick-updates universe
deb-src http://archive.ubuntu.com/ubuntu/ maverick-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/ maverick multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-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 usefull features
## Also, please note that software in backports WIL NOT receive any review or updates from the Ubuntu
## security team.

deb http://archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse

## Uncommed 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 maverick partner
deb-src http://archive.canonical.com/ubuntu maverick partner

## Uncomment the following two lines to add software from Ubuntu’s ‘extras’ repository.
## 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 maverick main
deb-src http://extras.ubuntu.com/ubuntu maverick main

deb http://security.ubuntu.com/ubuntu maverick-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu maverick-security main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu maverick-security universe
deb-src http://security.ubuntu.com/ubuntu maverick-security universe
deb http://security.ubuntu.com/ubuntu maverick-security multiverse
deb-src http://security.ubuntu.com/ubuntu maverick-security multiverse

Hola alguien puede ayudarme !! por favor