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Whenever I check for updates in the update manager I get a message saying that there is an issue with my internet connection and that it needs to be checked. additionally under details, this is the message that's there-

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

issue is, that despite this message, i get a number of updates, that i install, and after that is done, there's a message at the top of the update manager saying that the package details are 'x' days old. currently x=70

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marked as duplicate by Jorge Castro, Eric Carvalho, Seth, Kevin Bowen, Eliah Kagan Mar 29 '13 at 1:14

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

This ui-toolkit PPA is deprecated, you need to edit it, either manually in the /etc/apt/sources.list file or in the gnome control center - software sources menu, changing the appropriate entries from


So, change ui-toolkit to ubuntu-sdk-team.

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worked for me.thanks a lot! – Projjol Mar 29 '13 at 5:17

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