Similar issues here
. I can either pick up a Central that has unacceptable packet loss or one with a high latency, and my currently attached Central is looking like yours at the moment.
I'm logging both via PingPlotter and also using the TBB ping tool and both show the same issues. I am also getting a very weird issue that happens every day at about 19:40 (give or take 5 minutes) where the latency rockets up to 1500ms for up to 5 minutes, effectively stopping my link dead.
You could try disconnecting your PPoA connection and then reconnecting as BT allocates the Centrals on a 'round robin' basis ... from what I can determine there are five Centrals into Demon, but each one seems to have its own issues, either poor throughput, high packet loss or high latency (or a combination).
I've been informed my exchange goes C&W LLU in April ... just hope it improves matters as this will be the last chance for Demon to redeem themselves. I still maintain that Demon do not have sufficient purchased headroom on their Centrals, as each time they migrate customers off onto C&W things for ADSL Max users should improve, but they get worse. So my theory, backed up by what someone at Demon told me 'off the record' is that when they migrate off blocks of exchanges, they then reduce their BT Centrals capacity down to save money.
PS. I've also got a SamKnows monitoring 'router' which shows a similar trend, but unfortunately the sample rate is very much coarser than the TBB monitor.
Edited by burk (Wed 09-Feb-11 19:06:35)