They launched on a tuesday at 6am US time. Only hard core fans are up (in the US). EU fans got first crack at it and hat little problems. A lot of US people had to wait to end work and then get on. Also not everyone was trying to log in on first day. New people keep coming in every day adding to the log in que.
then for a while a lot of people were stuck exiting Haven, and were not adding to the queue.
also some people stayed in Havenan extra day or two.
now its been almost a week and everyone is done in Haven, and they want to move to the main server. Also the weekend so everyone has time to try and log in.
the more days pass, the more people will join and pass Haven and add themselves to the queue. Its inevitable.