Thanks again for the insight. Hopefully the old modem was dying and I'll be back to normal in a few weeks - frustrating as it is to not be at full speed, I'll take 30/5 over a constantly interrupted connection any day of the week, especially when I'm trying to work!

Leave it and the router on permanently for now if you don't normally.

Well, I hope I'm not speaking too soon but it looks like the modem was the culprit; modem has been up for 4 days 3hrs at the time of writing. I've left HG612 stats running the whole time but I don't think it's gathering ongoing stats. I haven't had a chance to investigate but snapshot stats seem to be working.

Anyway, I'll consider the problem solved if it stays up long enough for the profile to start returning to normal.

To get ongoing stats you need to have DSLStats installed and running.