Possible Duplicate:
How to install software or upgrade from old unsupported release?
I have problems upgrading from 10.10 - The Maverick Meerkat - to latest version. I receive the message:
A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry.
W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/source/Sources.gz 404 Not Found , W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/binary-i386/Packages.gz 404 Not Found , E:Some index files failed to download, they have been ignored, or old ones used instead.
I am in Copenhagen, Denmark and i can't understand why i cannot update to the latest version of Ubuntu.
I am waiting for a suggestion.Thank You.