I wonder if they've began upgrade work in my area?
I've never once seen the ping spikes as low as 40ms on a constant basis like this at any time during the day, granted its in the middle of the night, but i suppose wishful thinking might mean that they have upgraded something
The other day i did swap myself over from CPC11 to CPC2 and latency was noticeably better, im hoping its just a coincidence that last night i've seen the most stable latency i've ever seen for nigh on two years.
BTW this is mostly an idle connection with only browsing taking place during the frame, no downloading of any kind.