"Unable to connect" error with apt-get?

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http://askubuntu.com – I recently installed 12.04 but am unable to run sudo apt-get update and consequently sudo apt-get install xxx. When I run the first command I get several Ign http://extras.ubuntu.com precise InRelease and Err http://extras.ubuntu.com precise release.gpg Unable to connect to extras.ubuntu.com It works fine to wget extras.ubuntu.com. My /etc/apt/sources.list is the original file with swedish mirrors se.archive.ubuntu.com/ubuntu. For what it is worth I have tried other mirrors with the same result. My sources.list can be found here. Update I am aware that there are many questions like th (HowTos)