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Possible Duplicate:
How can I fix a 404 Error using a PPA?

I have the following error

Failed to Download repository information
Check your Internet connection..

W:Failed to fetch  404  Not Found
W:Failed to fetch  404  Not Found
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marked as duplicate by fossfreedom May 17 '12 at 12:25

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.

up vote 2 down vote accepted

Your system has a PPA that doesn't exist.

There is no Firefox-stable PPA for Oneric, as the latest Firefox is already in the main repos. You will need to remove this PPA from your Software Sources.

Please, look at these questions: How can PPAs be removed, and How to remove a repository

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thanks, managed to solve the problem. – Pedro Dec 26 '11 at 8:18

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