Comcast customers have been no stranger to bandwidth shenanigans over the years, from the whole torrent filtering mess to the 250GB monthly cap. Now the company is back with a new data throttling scheme intended to put the kibosh on excessive traffic during those times when the network is already being overwhelmed. The two-tiered system is put on alert if either more than 70 percent of your max bandwidth (downstream or upstream) is used for more than 15 minutes or if your particular Cable Modem Termination System gets congested and it decides that you're partially responsible. Should you run afoul of the traffic warden, expect to find yourself down-throtted for at least 15 minutes, or until your average bandwidth utilisation rate drops below 50 per cent for 15 minutes. If there is no congestion, however, you shouldn't notice any difference whatsoever -- unless, of course, John McCain gets his way. Warning: PDF read link.