Pretty much the same pattern as qasdfdsaq posted earlier. This is the "live" graph and the minimum ping times are gradually getting worse over the course of the evening. By 2am they'll drop back to their usual steady line I bet.
Speedtest reported 1.5Mb, a quick blast on Usenet ran at 31.9Mb so Lord knows what's going on
Edit: "Live" as in it only updates when you refresh the image
