I think 48 hours is more like "if all goes according to plan" situation, and even in that it takes 24+ hours for sure, and less than 48 hours, there aren't that many cases you get it back in a few hours, that just doesn't happen.

However, if things do not go according to the plan, then we are talking about a situation where it can easily take longer than 48 hours, and until what is wrong gets figured out, it could take as long as a week. I am not against these, I had it happen to me before and I was fine about it for two reasons. First of all duelbits is a trusted and well liked place, secondly I did not do anything wrong so I had nothing to worry about. Combine those two, and you know there is no problems.