I am really annoyed because I changed one of my subjects almost two weeks ago and it still hasn't been approved. Because of that, there's a subject on my timetable that I'm not even doing! I rang the student centre about it yesterday and they were like, "we're trying to get to it but we have about 5000 other requests etc". Argh, so annoying.
I had a similar problem. I added my breadth subjects in on Monday and the change still wasn't approved today. I went to Melb Uni Science Student Centre to sort out the issue today (as I was in the city anyway), and the guy at the desk approved the subjects on the spot :S If it hasn't been approved by tomorrow, maybe you should go and speak to the student centre. It takes them about 2 seconds to approve the subjects!
Now I have to change my subjects again
and if they're not approved by tomorrow morning, I will go to the student centre again. I don't want to end up with a crap timetable.