250 gigs is alot though. Who could even be able to use that much in a month? Then again, there are probably people and comcast probably has limited resourses. I mean, I find it hard imagine that they have an unlimited supply of gigs to give out to people. If people truely are using over 250 gigs in less than a month, then surely comcast's resourses are lowered, causing other people to suffer from speed cause of people who abuse the system. I mean, your computer gets slow if you use up so much memory and have tons of crap on it.
Of course, this IS just a guess so I dunno if this really is the case or not