UPDATE: 8/16 - We are still working on our long term solution for this. We know exactly what to do, it's just taking some time.
We had a problem with the systems today and the servers weren't responding for a few minutes. We have a number of plans to keep things speedy and up as much as possible. Namely we/ve almost doubled the number of processes, we're looking into improving caching, and working an alternate statistics engine to take load off during the day.
Just wanted to let you know we're keeping an eye on things, and to apologize for any inconveniences the downtime may have caused.