I think if you want a ticket, try. I tried for weekend one and at 10:02 Frontgate told me weekend one GA tickets were sold out. You could still get some of the packages. To kill the scalper market I would not be suprised if they released another few hundred tickets once a week for a while.
I think for a brief moment, Sigur Ros defied the existence of existence and created our own parallel dimension where all dimensions became meaningless and we were joined together in a massive spiritual oneness of Icelandic mojo.