Since upgrading to 7.6Mb/sec DSL, I've had an occasional issue where the Tubes get all slow-like. The modem will say it's connected at full speed, and that things are, highly technically, "GO!". However my latency is horrible. Even to my first upstream router I end up getting like 50+ms ping replies. Pinging my site or 126.96.36.199 or other "Things that are fast on the Internet" ends up well over 100ms.