DSL continually stalls momentarily while loading pages or files
The short version: AT&T accidentally disconnected my DSL service for 9 days. Now that I have it back, it seems like everything other than the most simple webpages or very small downloads hang for a while. Oddly, the AT&T Speedtest doesn't hang, and my download speed looks fine. But, for example, if I click on a music video on YouTube, the first 7-15 seconds may play, and then it will stop for 30-60 seconds before resuming. Google Maps used to work pretty well, but now it takes so long to load that it gives me a "Problems Downloading?" message. Downloading a pdf document is similar - the download starts, hangs up for a minute or so, and then resumes. Any ideas of why this might be happening?
The longer version: I've had AT&T DSL service for years, and have been quite satisfied with it. About a year ago, I bought a new computer with 64-bit Windows 7, and because of compatability issues, that meant I had to get a new DSL modem. I decided on a non-AT&T supported Actiontec GT701D, and installed it without incident. Everything worked fine for about a year.
Then, in late March this year, my DSL service was accidentally disconnected for 9 days (apparently a service rep made a typo on some other person's order, typing in my phone number by mistake). Although at the beginning, there was talk "restoring" my old service, what really seems to have happened is that I actually got new service, with my pre-existing email account and IDs being transferred over to it.
And now it temporarily halts when I click on anything bigger than very small chunks of data.
So, there was no physical change on my end - I have the same equipment and the line is the same. I'm thinking that the problem is either one of two things - somehow some settings in my modem or computer were changed during the re-registration process, or else something changed on AT&T's end. I did the re-registration with a service rep on the phone helping me through it all (and she was wonderful to work with, even if my service ended up being deteriorated). We went through quite a lot of detailed settings both in my compurter and in the modem, I don't remember making very many changes, but of course, just one could mess things up.
I've done a power recycle on the modem to see if that would make any difference, but it didn't. I'm thinking of trying to do a reset of the modem to the factory defaults to see if that would work, but worry that it might mess up my connection altogether, and having been offline for nine days earlier, that's not something I want to risk.
Anyone have any ideas of what is causing the problem and how to fix it?