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Possible Duplicate:
How do I deal with “unauthenticated sources” errors in the Software Center?
How to install software or upgrade from old unsupported release?

I am using ubuntu 10.10, here i am not able install any paint tool. If i try to install some tool, it will show below message in a dialog box.

 Requires installation of untrusted packages

The action would require the installation of packages from not
 authenticated sources.

Please suggest some paint tool along with installation steps.

Also i have tried $ sudo apt-get update but it is showing like below

...

Err http://in.archive.ubuntu.com maverick-updates/multiverse i386 Packages 404 Not Found [IP: 91.189.92.200 80]

Fetched 198B in 22s (9B/s)

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/maverick/main/source/Sources.gz 404 Not Found

...

Community
  • 1
Shruthi R
  • 121
  • Ubuntu 10.10 is End-of-Life and the Extras repository does not have any software for this version of Ubuntu anymore. Upgrade to a newer stable release of Ubuntu. – gertvdijk Jan 30 '13 at 22:48

1 Answers1

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Try removing any PPAs you added, and switching from the Indian mirrors to another mirror using the Software Sources tool.

Flimm
  • 41,766
  • EOL means End-Of-Life, that release of Ubuntu is no longer supported and the mirrors don't contain packages for it any more. – Flimm Jan 31 '13 at 10:27