How to install software or upgrade from old unsupported release?
I am using Ubuntu 9.04 and having problem updating. When I start the Update Manager, I get a message saying:
Could not download all repository indexes
The repository may no longer be available or could not be contacted because of network problems. If available an older version of the failed index will be used. Otherwise the repository will be ignored. Check your network connection and ensure the repository address in the preferences is correct.
Then I close it and click Upgrade, and I get this error:
Could not find the release notes.
The server may be overloaded.
What can I do to solve this problem?