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Possible Duplicate:
Ubuntu Software Center not working - “Check Your Internet Connection”

Installed Ubuntu 12.04 LTS. I got this problem:

  1. No install option in any software in software centre
  2. Can't install any tar.gz or any program
  3. Can't update through terminal
  4. Can't download any update , its says check ur network connection but my internet is working at the same time.
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marked as duplicate by jokerdino, Jorge Castro, psusi, Mik, Nitin Venkatesh Nov 6 '12 at 18:35

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

This is a laundry list, not a question. You need to ask a specific question, and provide background details. – psusi Nov 6 '12 at 14:46

You try to do in a terminal:

sudo apt-get update
sudo apt-get dist-upgrade

If you get an error, please paste it on another comment to this message.

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