Looks like AT&T's taking some aggressive steps to manage network traffic now that it's offering subsidized netbooks -- the carrier updated its data plan terms of service last night to specifically single out and prohibit "downloading movies using P2P file sharing services, customer initiated redirection of television or other video or audio signals via any technology from a fixed location to a mobile device, web broadcasting, and any applications that tether the device to Personal Computers or other equipment." That's an impressively strict set of rules that seemingly bans a number of apps AT&T customers are already using without complaint -- everything from SlingPlayer to Qik t
