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I changed software & update settings which may be the problem, what does the default for this look like?

I tried sudo apt-get clean,sudo apt-get update,sudo apt-get upgrade.
I also tried software-properties-gtk in terminal and it gave me:
gpg: /tmp/tmp<somerandom>/trustdb.gpg: trustdb created.

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I updated the software about 2-3 hours ago and it worked fine but now I get the same problem has you. I haven't changed any settings so probaly is an ubuntu server problem, my server is Spain. – MarcVal123 Jun 5 '13 at 20:51
What exactly is the output of sudo apt-get update? – Alaa Ali Jun 5 '13 at 21:15

I just had this problem. My server was Australia - I changed it to the main server in Software Manager and it was fixed.

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