At 10:18am PST we experienced unexplained high loads. We are working to restore service. We will update here as we have more details.
10:34am PST: Service was restored. We are working to diagnose the cause.
6:17pm PST: We are continuing to diagnose. We have narrowed the cause down to a runaway process caused by excessive network traffic. We are isolating certain types of traffic to prevent this in the future.