I've just logged into another machine without problems. I go back to my original machine and I have the same problem. My main is the better one and my friend is using the other so still can't play :(
I've got the same problem too at the Whispering caverns. My alt in Protectors enclave logged in without any problems. It would be nice to get a response to this problem as I think we're going to find that it's affecting quite a few people.........even just to say it's being looked into.