said by rhinobit :
Would ATT be throttling it?
You may be encountering the same problem that has been vexing me for about a week. It appears that some of the new equipment AT&T Southeast is installing suffers from so-called "buffer bloat" — a condition that can lead degraded performance. You can test for that problem (and many others) by connecting to »netalyzr.icsi.berkeley.edu/
and following the on screen directions. After several minutes have elapsed, you'll be shown a plain English, comprehensive report on the status of your connection. Any problem areas will be highlighted. In my case, the report indicated that buffer bloat was a problem.