can update my ubunto "0% [Connecting to 192.168.43

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http://askubuntu.com – When i tried to update my Ubuntu 12 through the update manager iv received an error about some unknown resource. so i tried doing it from the terminal with 'sudo apt-get update' but all i got is: '0% [Connecting to' repeating it self... and when i pres Enter it shows: ' W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/precise-security/universe/i18n/Tr... Unable to connect to E: Some index files failed to download. They have been ignored, or old ones used instead. ' I dont even when form where that i.p came from.... t (HowTos)