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On the Ubuntu website, it says that if I want to update Ubuntu from 12.04 LTS to 12.10, I have to go into Update Manager and click 'Check', which won't work. It pops up saying, "There are no updates to install," or, "The software

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marked as duplicate by bodhi.zazen, Nathan Osman, Seth, Eric Carvalho, hhlp Feb 9 '13 at 10:58

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

Try : Open update manager-> setting and try to change the server to main server or server which suits you and the check for update. if don't work then try sudo apt-get update in terminal

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