Ubuntu 12.10 is no longer supported also. You can check the Ubuntu release table in the below link to find the versions that are still supported. https://en.wikipedia.org/wiki/Ubuntu_%28operating_system%29#Releases
I really recommend you to use the Ubuntu 14.04 Trusty Tahr, which is supported until April 2019 (5 years support). It is also the latest long term support (LTS) version. The next LTS version will be released on 2016.
Ubuntu 12.10 is no longer supported also. You can check the Ubuntu release table in the below link to find the versions that are still supported. /en.wikipedia. org/wiki/ Ubuntu_ %28operating_ system% 29#Releases
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I really recommend you to use the Ubuntu 14.04 Trusty Tahr, which is supported until April 2019 (5 years support). It is also the latest long term support (LTS) version. The next LTS version will be released on 2016.