This all stemmed from when entertainment companies were threatening to supina Comcast and other isp's for customer's personal info in the battle for intellectual property...... or file sharing.
Comcast then put in "sandvine" boxes at the edges of all their networks. At first, sandvine would kill your connection temporarily if your ip had a non-http style protocol going to or from it. This lead to a class action suite against Comcast, and now sandvine mon itors usage, and caps bandwidth when non-standard ftp and http protocols are in use.
How to prove sandvine is on your exterior cable network..... Go to a few different sites and grab a few ftp downloads (one at a time). The d/l will start as normal, usually a mb/s or two depending on the server. Then something screwy happens.... your download will mysteriously throttle down to ~700-800 kb/s. It will stay there until the download is completed. That is, imo, horseshit business.
I complain to them almost weekly about net capping, and that is probably the only reason I haven't received a "too much internet" letter or call yet, and probably won't. As soon as the dsl carrier for my 'hood upgrades their equipment on my street, I'm gone.... SCREW YOU COMCAST.....
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