It has been determined that Thursday's (9/21) intermittent website errors were the result of a software failure of a traffic routing appliance (load balancer). The load balancing failure resulted in an abnormal amount of traffic being routed incorrectly to a small subset of servers, causing website errors and page load failures. The redundant load balancer was activated and is running as expected. Future maintenance will be scheduled to perform any necessary adjustments. At this time, we are working to find a permanent solution to the issue with the load balancer and will communicate a new date for the reinstatement of the 9/20 release which reactivated caching improvements originally attempted in July.