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

I got error in update-manager

W:Failed to fetch 404 Not Found [IP: 80] , E:Some index files failed to download. They have been ignored, or old ones used instead.

How do I resolve it?

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marked as duplicate by fossfreedom Oct 30 '12 at 10:04

This question was marked as an exact duplicate of an existing question.

It seems that the ppa you added that is available longer or added outdated PPA. you have to type following command in terminal to install skype.

sudo sh -c "echo 'deb quantal partner' >> /etc/apt/sources.list.d/canonical_partner.list"
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