Techie question, concerning mobile broadband (laptop with a modem, internet on the move). We've had a look at an external modem supposedly supplied by only two networks at the moment. Amongst all the sales crap, this widget is little more than a sim card in a plastic case. Of course; "its much, much more than that". Course it is In usual ISP and phone sales parlance, you can pay loads for an unfairly long contract, or pay loads for a piece of plastic with a sim card inside. So, rip off, is our first judgment. Apparently, now here's the wonderful bit: you can log on, anywhere. Yep, my thoughts exactly.....barracks! And you know what? we couldn't ge it to work. Not once. It never connected, in a whole hour, not once. Of course, we might be wrong, and we might have had atmospheric problems. We might have had interference from a parallel universe, or even the Moon, or something. We might have expected too much, such as getting the thing to do what it says on the box.