Bonjour je suis sur ubuntu 10.10 et lorsque je veut installer un logiciel avec la logithèque ubuntu et sa me met

le téléchargement des informations de dépôt a echoué

W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/maverick-security/universe/source/Sources.gz 404 Not Found [IP: 91.189.92.200 80]
, W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/maverick-security/multiverse/source/Sources.gz 404 Not Found [IP: 91.189.92.200 80]
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/main/source/Sources.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/restricted/source/Sources.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/universe/source/Sources.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/multiverse/source/Sources.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/main/binary-i386/Packages.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/restricted/binary-i386/Packages.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/universe/binary-i386/Packages.gz 404 Not Found
, W:Failed to fetch http://fr.archive.ubuntu.com/ubuntu/dists/maverick/multiverse/binary-i386/Packages.gz 404 Not Found
, W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/maverick-security/universe/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.200 80]
, W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/maverick-security/multiverse/binary-i386/Packages.gz 404 Not Found [IP: 91.189.92.200 80]
, W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/maverick-security/main/source/Sources.gz 404 Not Found [IP: 91.189.92.200 80]

S'il vous plait aidez moi

Salut,

Juste pour vérifier, copie-colle ici ce que te sors la commande
cat /etc/apt/sources.list

Faudra changer toutes tes adresses de dépôts en remplaçant fr par old-releases si tu veux vraiment garder ta version.

Mais c'est pas conseillé du tout, ta version est périmée et plus supportée, tu n'auras que des paquets gelés depuis plusieurs mois et pas de mise à jour de sécurité. Faut passer à une version plus récente, soit la 12.10 (la dernière), soit la 12.04 que tu pourras garder 5 ans car c'est une LTS.

1. deb cdrom:[Ubuntu-Netbook 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/ maverick main restricted
2. See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
3. newer versions of the distribution.

deb http://fr.archive.ubuntu.com/ubuntu/ maverick main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick main restricted

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

deb http://fr.archive.ubuntu.com/ubuntu/ maverick-updates main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick-updates main restricted

1. 1. N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
   2. team. Also, please note that software in universe WILL NOT receive any
   3. review or updates from the Ubuntu security team.

deb http://fr.archive.ubuntu.com/ubuntu/ maverick universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick universe
deb http://fr.archive.ubuntu.com/ubuntu/ maverick-updates universe
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick-updates universe

1. 1. N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
   2. team, and may not be under a free licence. Please satisfy yourself as to
   3. your rights to use the software. Also, please note that software in
   4. multiverse WILL NOT receive any review or updates from the Ubuntu
   5. security team.

deb http://fr.archive.ubuntu.com/ubuntu/ maverick multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ maverick-updates multiverse
deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick-updates multiverse

1. 1. Uncomment the following two lines to add software from the 'backports'
   2. repository.
   3. N.B. software from this repository may not have been tested as
   4. extensively as that contained in the main release, although it includes
   5. newer versions of some applications which may provide useful features.
   6. Also, please note that software in backports WILL NOT receive any review
   7. or updates from the Ubuntu security team.
2. deb http://fr.archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
3. deb-src http://fr.archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse

1. 1. Uncomment the following two lines to add software from Canonical's
   2. 'partner' repository.
   3. This software is not part of Ubuntu, but is offered by Canonical and the
   4. respective vendors as a service to Ubuntu users.

deb http://archive.canonical.com/ubuntu maverick partner

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

1. 1. Uncomment the following two lines to add software from Ubuntu's
   2. 'extras' repository.
   3. This software is not part of Ubuntu, but is offered by third-party
   4. developers who want to ship their latest software.
2. deb http://extras.ubuntu.com/ubuntu maverick main
3. deb-src http://extras.ubuntu.com/ubuntu maverick main

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

voila ce que cela me dit

Fais une sauvegarde de l'ancien fichier:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

Et ouvre en mode root le fichier sources.list:
sudo nano /etc/apt/sources.list

Tu efface tout et tu remplace par:

1. deb cdrom:[Ubuntu-Netbook 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/ maverick main restricted
2. See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
3. newer versions of the distribution.

deb http://old-releases.ubuntu.com/ubuntu/ maverick main restricted
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick main restricted

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

deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates main restricted

1. 1. N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
   2. team. Also, please note that software in universe WILL NOT receive any
   3. review or updates from the Ubuntu security team.

deb http://old-releases.ubuntu.com/ubuntu/ maverick universe
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick universe
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates universe
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates universe

1. 1. N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
   2. team, and may not be under a free licence. Please satisfy yourself as to
   3. your rights to use the software. Also, please note that software in
   4. multiverse WILL NOT receive any review or updates from the Ubuntu
   5. security team.

deb http://old-releases.ubuntu.com/ubuntu/ maverick multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick multiverse
deb http://old-releases.ubuntu.com/ubuntu/ maverick-updates multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-updates multiverse

1. 1. Uncomment the following two lines to add software from the 'backports'
   2. repository.
   3. N.B. software from this repository may not have been tested as
   4. extensively as that contained in the main release, although it includes
   5. newer versions of some applications which may provide useful features.
   6. Also, please note that software in backports WILL NOT receive any review
   7. or updates from the Ubuntu security team.
2. deb http://old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
3. deb-src http://old-releases.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse

1. 1. Uncomment the following two lines to add software from Canonical's
   2. 'partner' repository.
   3. This software is not part of Ubuntu, but is offered by Canonical and the
   4. respective vendors as a service to Ubuntu users.

deb http://archive.canonical.com/ubuntu maverick partner

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

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

Tu valide en appuyant sur Ctrl+O puis Entrée puis Ctrl+X si t'es dans Nano.
Tu met à jour la base des paquets:
sudo apt-get update

Et tu essaye d'installer maintenant

Mais je maintiens, c'est très très risqué de rester en 10.10. Pourquoi tu veux pas passer à une version à jour?

je ne sais pas comment faire sans devoir faire un reboot

Reboot? Réinstallation tu veux dire?
Théoriquement, Ubuntu prévoit un module de mise à niveau entre les versions, mais c'est foireux et vu que ça te ferai sauter plusieurs versions, encore plus.
Le mieux est de sauver tes données sur un support externe et regraver un CD ou une USB avec Ubuntu 12.04 ou 12.10 (ou une autre distribution, éventuellement) pour installer la nouvelle version par dessus l'ancienne. Tu prend vraiment beaucoup de risques en restant sur une version dépréciée depuis 2 ans et demi

je vois mais en tout cas merci beaucoup car cela marche très bien