So here's Charter B.S. answer to my problem...
Thank you for contacting Charter Email & Internet Support. I assure you that I will strive to assist you in the best possible manner.
I understand your concern about this issue. Since you have already spoken with us and it has been determined that the issue is not an overall one affecting all of our customers in your area, the problem may be with a program (or with spyware) on your computer that is also on the computer of the person you saw on the forum.
I suggest updating the virus and spyware definitions for any and all antivirus and antispyware programs installed on your computer, and perhaps even surfing to www.download.com
to download an extra free antispyware program to use to crosscheck against the one(s) you are already running.
If you have any additional questions regarding your services or need further assistance please contact us via our website http://www.charter.com/service/contact/contact.asp
The Charter High-Speed Advantage, leading the industry; personal antivirus and firewall security suite, telephone service, 5 MB Internet speed, parental controls, games, music and so much more. We invite you to "Live Chat" with us; we would love to hear from you!
Internet Email Support Team
I'm still awaiting a reply to my email...here's a copy of the email I sent to Charter:
"I'm having problems downloading any files over 400 Megabytes. I used to not have any problems in the past, but for the last two weeks or so, I will be downloading any file over 400 mb and it will go fine until I get to 400 and then the transfer will time out. At first I thought this problem was on my end, but after searching several different forums online, there is another customer of yours that lives in the same town as I do having the exact same problem as me. I've chatted online with one of your techs and he said everything's fine on your end. And your other customer having the same problem as me had Charter come out to where he lives and troubleshoot his connection and everthing turned out fine. I used to never have this problem, until about two weeks ago. So I ask you, what have you changed in the last two weeks? Please help. Thank you."
Please contact as soon as you can. Thank you.
...tell me more about the sockets?
...I'm scanning my computer for spyware and the only thing that I've detected is a file called "trojan-backdoor-flood.mirc" I'm going to wait till it finishes scanning and then clean my computer and see if I can download again.