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Updater keep saying:

Failed to download repository information.
Check your Internet connection.


W:Failed to fetch http://ppa.launchpad.net/screenlets/ppa/ubuntu/dists/quantal/main/source/Sources  404  Not Found,
W:Failed to fetch http://ppa.launchpad.net/screenlets/ppa/ubuntu/dists/quantal/main/binary-amd64/Packages  404  Not Found,
W:Failed to fetch http://ppa.launchpad.net/screenlets/ppa/ubuntu/dists/quantal/main/binary-i386/Packages  404  Not Found,
E:Some index files failed to download. They have been ignored, or old ones used instead.
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marked as duplicate by belacqua, karel, Eric Carvalho, chronitis, Avinash Raj Feb 27 '14 at 16:19

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I tried changing Download from: Offical and now mirror.dattobackup.com/ubuntu but still failed. –  Jonthue Michel May 3 '13 at 22:57

2 Answers 2

I browser through the site and find out a perfection solution at this link

How can I fix a 404 Error using a PPA?

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Same thing happened to me. I went to the software updater setting -> Other Software tab and found those PPAs and removed them.It should work.

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