It's rather difficult to say how many hours. I've downloaded my assignment in september and uploaded it in april. I've got a lot of work to do at my office in this time. I think that a month and a half of 40 hours/week is a pertinent estimation.
Congratulations, Adrian. How long it is taken to receive the score results? I have uploaded my assignment (11.06.2004) and I have seen that I was certified on 21.06.2004 (also the exam status is passed), but I cannot see any score results. Is this the normal case?