said by AVonGauss:You make a lot of inaccurate assumptions. The problem occurs whether using FTP or P2P, doesn't matter, anything involving a large file transfer. Problem occurs regardless of the presence of a router or not (i.e. plugging directly into the modem). Problem occurs with my own modem or a borrowed modem from the Comcast technician. Problem occurs regardless of operating system or computer (1 WinXP, 2 Win7 64-bit, 1 Macbook Pro). Comcast, via their CSRs and several onsite technicians say I have 12/2 service, are you saying they've lied to me?
From the vague references to the actual symptoms you have posted, it sounds more like you are trying to use a P2P program and are having trouble with the upstream which usually involves the items below:
1) Your router's NAT table is becoming overloaded.
2) Your upstream is becoming over-saturated.
3) You believe you're on 12/2, but are really still on 6/1 - see #2.
The way I see it; you can continue to think that we must be a bunch of morons that don't get it and are trying to spread evil corporate propaganda, or, if this is an actual problem that you would like solved it might be worth considering using a different approach.