After I installed some updates I restarted my computer.

Some days later I wanted to check for updates because the update-manager shows me the following: "The packet information has been updated last 24 days ago." and a window appeared.

That window after downloading packages, said that:

Failed to download the information from the repository

Check your Internet connection

Details:

W:Failed to fetch gzip:/var/lib/apt/lists/partial/ar.archive.ubuntu.com_ubuntu_dists_oneiric_unive??rse_i18n_Translation-en Encountered a section with no Package: header , E:Some index files failed to download. They have been ignored, or old ones used instead.

But my Internet connection works fine.

I downloaded and installed and run the banish404 software and it does not work.

Also I tried with an terminal with 'sudo apt-get update'.

What do I have to do?