UPDATE 3:30 p.m. PDT 10/13: The Ashes of History world event is now live on all shards.

Rift's most recent event, Ashes of History, was scheduled to go live sometime today. It briefly hit the EU servers earlier in the day and severe lag was reported. The event was then turned off on those servers and has now been announced as delayed:

Update 4:30PM PDT 10/12 – The start of the world event has been delayed due to concerns over possible performance issues that arose during the opening in EU earlier today. We need some extra time to look into it and ensure it’s ready for prime-time. We expect to be able to start the event before the weekend and will let you know once it’s been rescheduled – thanks!

We'll keep you posted when we find out more information!