Me too. I finally had time to log in to the do the special event, and the server is coming down in 2 hours..and I can't login
it ran a patch first, then said it couldn't contact the account server, now all I get is "unable to autheticate"
I am having same problem. I was actually logged in. Logged off to switch characters. Got stuck on "connecting to account server". I closed the client and restarted launcher. Now it gives me "unable to authenticate" on the launcher window.