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When update crashes I got this message:

W:Failed to fetch  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 Jorge Castro, Luis Alvarado Mar 28 '13 at 15:05

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Looks like an external repository you've added is to blame. Remove it, and updating should work. – mikewhatever Mar 19 '13 at 23:11
This might be a good way to deal with this:… – Mordoc Mar 20 '13 at 1:25
This isn't a PPA, it's just an external repository, but the answer to that question will fix this here too. – Jorge Castro Mar 28 '13 at 13:09

1 Answer 1

I think your link is wrong, try this one

deb precise/
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