[phreekopath]

It has something to do with the data network. I'm not entirely sure, but with it on, i can run the speedtest.net app and with it off, I cannot, though i am still capable of email and web browsing.

There is a widget called "power control" that I've been using since day 1
It gives you options for wifi, bluetooth, gps, sync, and screen brightness all in a single bar for quick access. Turning the screen down when you're in a building, and turning off sync when you're in the office should help save your battery a bit. On the same screen i also have the airplane mode toggle (for meetings) and the mobile network toggle - which i thought just turned off the 3g, saving your battery if you're in an area where 3g is hard to come by or you bounce between 1x and 3g, but I've been told that is not what it does.