I haven't met tooo many people yet either... but it takes time... we've only been here a week, and the courses have barely started yet! My flat mates here are good, and have mainly gone out with those at night... aswell as a couple of others from another apartment.
I have done all this freshers uni bit before, and I didnt get my firm group of friends there until quite a few weeks in! Joining societies etc meeting people with similar tastes is another way to meet more people.