There will be a brief fix for latency issues.

At approximately 12:0 noon Pacific the NA region shards will be coming down for a hotfix that includes a latency bug fix that should allow us to turn the Ashes of History world event back on. The shards will be coming down at 12:00pm PDT 10/13/11 for an estimated downtime of 30 minutes.

Watch this space for patch notes!