I think some may have misunderstood what koston means. I believe he's reffering to the pillreports guideline for a 10 which states "Real MDMA, Peak 5 Hours, Clean, Single Dose, Must be EZ-Tested!!", compared to that graph which appears to show that it peaks for not even 4 hours.
I think that graph may only be a rough guide, not something which is going to be definately true for everyone. Theres a huge number of factors to be taken into consideration, not only the obvious weight/age but also just the pure fact that no two people are the same, and some people are sensitive to mdma while others need much more just to feel an effect (and this is still true assuming those two people are the same age/weight and have consumed the same amount of times before). Personally, the longest i've peaked for was 5 hours (but this was on my first pill aswell, white stardust 2003) but since then I've also got a 4 hour peak from half a red rolex last year (though i had also had a 12 month break prior which im sure helped to make the experience much stronger).