Quote Originally Posted by arpanaut View Post
Maverick has passed "End of Life" those repositories no longer exist.
https://help.ubuntu.com/community/EOLUpgrades

You can follow those instructions to get old updates and/or upgrade to a newer release.
Better yet back up your important data and re-install to a more current release.
I would suggest 12.04 as it is a LTS and will be supported until 2017.

Edit: For reference. https://wiki.ubuntu.com/Releases
thank you very much these links were very useful to me till I get the new 12.04