Kryo posted somewhere that there was a lot of pre-orders so they had a lot of people to go through and activate...Maybe you are really unlucky and will have to wait untill after the weekend...Sorry.
Am too tired to look for the post, but it was in one of those with some guy asking if it was too late even if he only preordered earlier today ( earlier as in before the beta started but still very close).
Hope they have some automated system otherwise you might be out of luck 
regards
