I bought and installed the game today myself (28/3-11).. and i experienced the very same.. and did the exact same thing as you did...
I am sincerely hoping it is a temporarily server malfunction, but i found this post of yours, as i was getting frustrated and googled the net for some of the key words in this problem..
So you are not alone in this.. I will be monitering this post as well, in hope of an answer to the problem xD