A SE staff member gave a response in a previous thread: http://forum.square-enix.com/ffxiv/t...=1#post1202152

Apparently, they're already aware of this situation and they're investigating it. From now, I'm experiencing lag as well, random freezes and 90k errors.

Character Name : Lucille Wallace
World : Hyperion
ISP : Fibertel (Argentina)
Does it happen only on one world or character ? : I only own one character and I play in Hyperion.
When the problem started happening ? : Yesterday (When I was able to play)