I'm on wireless at home most of the time and same at school. Sometimes I stare at my phone and the data indicator on HSDPA is just solid for a few minutes. I'm not even sure what the hell is sucking up my data. I sync Facebook, Twitter and Gmail. Now I realize ICS will have data control, but it seems like Android uses more data than iOS in general. While ICS adds limits for apps, I still don't get why so much data is pulled. I can't even get away with 200mb data plan even with ZERO music streaming.