Surprised this thread hasn't been deleted or locked yet like all the others that appear around September time with people asking "how to bypass XYZ restriction at my University".
My tuppence worth; if you did that sort of usage on some of the networks I've been involved with you wouldn't even be getting a cap or a warning we would have simply just disconnected you for the rest of the year and you would have a very, very hard time getting that decision revoked.
Again I'll just throw in my comment along the lines of the others that you really don't seem to appreciate how much these facilities cost to provide (aside from the actual connection there is likely hundreds of thousands of pounds worth of switches, routers, firewalls etc. to account for too).
And if you presented your case to the University in much the same way you have here I'm not surprised some sysadmin has just come back with a "very negative view" of your requests.
Maybe you should get together with some of your similarly minded friends and perhaps put together a sensible proposal / petition that shows there is a genuine demand for services such as Skype to be used in a legitimate manner that is greater than the University is allowing for?
Similarly if there are popular bits of software / patches for games etc. why not see if they would be prepared to set up a local mirror for that content?
Also FWIW I spent a year abroad studying, I wouldn't have dreamt of spending it 24/7 locked in my room on the internet, playing games and Skyping constantly to people back home... get outside, find new people and make new friends, perhaps take in some of the fine culture in this country that you're likely missing out on (though I notice you are in Lancaster so that might be a bit harder to find

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