...big time. My personal experience with TWC's cable and internet service can be summarized thus. The moment so much as one flake of snow falls, or the temperature dips below the bonechilling temperature of 35 degrees, you can forget about your digital cable working for more than ten minutes at a time, pretty much until spring. If you have cable internet through them, you are doubly sucking. If you were bold enough to cancel your land-line telephone and sign up for Vonage, you're at least triply sucking, because if your cable goes out, which it does often if you have Time/Warner Cable, you have no communication capability beyond sticking your head out the window and screaming.
That having been said, Cory Doctorow of BoingBoing confirms that TWC's sucking is not confined to central New York State.
Time Warner cable bought out my local company, Adelphia, last year, and since then the service has gone straight down the toilet. I'm in the middle of my fourth outage in six months, and for the fourth time in a row, Warners is insisting that the problem is with my cable modem. The last three times, it turned out to be a system outage. I'm sure it will turn out to be a system outage this time, too.
But Time Warner won't look into the problem -- instead, as before, they insist on waiting two days while they get a service van out to look at my modem, verify that yup, once again, it hasn't spontaneously stopped working, and then they'll investigate at their end.
Two days? Try two weeks. Seriously. Two weeks.
When I called Time Warner, they offered to fix the problem faster if I'd pay for "business service," then when I balked at paying extra money for the privilege of getting the service I'm paying them for, they started telling lies, saying that cable modem is always faster than DSL (it isn't), and that Time Warner is the only company that doesn't charge for sending out technicians on service calls (they aren't).
They didn't try that on me, probably because they don't offer it in the rural paradise that is central New York State.
I eventually got Verizon DSL, which is almost as good as the cable internet service I was getting (when the cable service was working). Sure, DSL goes down from time to time, but for minutes, not days (or weeks) at a time.