I've never seen it take too long. Have you attempted to do the same update more than one? I can see that you've requested a domain change 3 times, but I can't see the times. At any rate, your domain will be approved as quickly as possible as long as you don't submit it multiple times; this will put you to the end of the line. I would say if it hasn't taken place in 24 hours, then post back here so we can have a staff member take a look at it.