Alright... Im just gonna list out a few possible ways that I would do before going all crazy. I may be repeating what other people said, but whatever, I dont feel like looking and trying to sort **** out. Some of the things I may list may not even be remotely related to this, but whatever, Im just gonna list what I would do.
1. Try restarting the computer.
2. Try clearing out the history, cookies, etc.
3. If connected through a router, then its probably just other people using up the connection.
4. If connected through a wireless connection, make sure youre double safe. Someone else could be using up your connection.
5. Check for spyware. You could use one of the programs out there, but hell I would just open up taskmanager and end anything I think is suspicious-looking.
6. Try resetting the cable (o_o)
7. Check to see if its just the hours thats causing the problem. Dont turn on your computer/turn off your cable modem until late afternoon and see how your connection is doing. If its the hours, well, you cant really do anything about that...
unless of course you feel like blackmailing a lot of people
If it isnt the hours, then call them up and ask them why it may be happening. If they try to cut you off in mid sentence, just tell them to shut up and listen. It may also be helpful to say youre very aggravated by this problem before you start saying anything, because it could bring you to their attention.
8. Wait. They could be having some weird kind of problem/overload if it just started a week ago.
If nothing works just switch out of time warner.
I got time warner as well, and Im not having any problem with the internet... either im just lucky, or it could be something local. Good luck trying to figure it out.