Had another letter from our ISP - exceeding their fair usage policy. Second time we've had it, and previously had to tone down the stepsons usage of their laptop/PS3/Wii/Xbox etc. Now it's getting serious and am looking for suggestions as to ways I can monitor bandwidth usage at router level and perhaps start blocking beyond certain usage. As this isn't the NAAFI, I've already ruled out castration - although it's a serious consideration - perhaps they'd listen to me then. Thanks in advance for any ideas.