From my experience, my ping fluctuates a lot. I should be pinging 80-90 but often it jumps up to 200 for at least 5 minutes, sometimes even up to half an hour before it goes back down, but soon it goes up to 200 ping again. I have ran the PingPlotter test and the times I was getting 200 ping, the pack loss was at 100%. It seems that I might be the only one with this problem, but my connection to other servers (US, SG and EU) are fine, i.e. pings there are stable. Karnage has a similar issue that he gets higher and higher ping at night due to internet traffic. Both problems are not caused by our ISPs so it most probably is the server. But from what I have observed, people from the US has no connection problem to the JP server. So I was wondering if the earthquake actually did "shake off" the underground wire thingies/server station thingies connecting with certain countries in Asia in Japan.