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I have a little problem updating my ubuntu. I have not update it for a while and I tried today. The problem is that I tried 3 time, and there is the same problem. The problem says something like this: "Error in validating some packages. Could not authenticate some packages. This may be due to temporary network problems. You can try later. Beneath you have a list of the packages that could not authenticate."

And there are a lot of packages.

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For the other problems, I would recommend running all of the following commands:

sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get update
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ok, I'm a beginner in using ubuntu and I don't know how to use these codes... I ask a lot before doing something :P – Ioana Dec 22 '12 at 16:09
Open terminal => Ctrl + Alt + T & execute codes : 1rst : sudo apt-get clean 2 : cd /var/lib/apt ....... – DARDAR SAAD Dec 22 '12 at 16:16
thanks a lot!!! :D – Ioana Dec 22 '12 at 16:46
you are welcome. – DARDAR SAAD Dec 22 '12 at 17:08

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