Interestingly, this happened last night to a few people in my guild. There was a period of about 5 minutes where a few guildies DC'ed. I had massive lag for those few minutes... then it cleared up.
Haven't seen anything other than that. Also, the guildies that had issues SEEMED to be from Florida (myself included). That might make it a local issue.
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WoW - Aureliano the Insane - level 90 Druid on Sen'Jin
Nanaoki - level 88 Mage on Sen'Jin