cannot reinstall skype after manually removing its "held back" package

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http://askubuntu.com – I am running 12.04 (precise) Ubuntu on my computer, which I keep it up to date. Recently skype started being listed as a "kept back" package whenever I ran a software update. Stupidly I uninstalled Skype manually using "apt-get purge" intending to then install the most recent version. I have learned never again to do this, as now I am unable to reinstall any version of Skype. This really is a problem since it is my prime way of keeping in touch with faraway relatives. I tried telling apt-get to specifically install the version of skype and skype-bin currently in precise-updates ( (HowTos)