So, where I am we can't get ADSL, so we have 3G USB internet with a 18GB cap. And I tend to go through it quickly, but I think it isn't just me and surfing. And today, using SurplusMeter i watched my internet bandwidth usage. I used 50mb or so with my knowing. Then leaving the internet on, and being away for about half an hour with nothing open but iTunes and safari was open but with no windows open, it used around 500mb. ...What is happening?