I have 97 iTraders but postbit says 79 in the marketplace forums. Seems to have got stuck about 5 days ago I think.
Do you have multiple itraders from one or more persons? If a member gives you positive itrader more than once, only one counts. I see your last itrader was given to you by member who has left itrader for you previously.
That is just because you have dealt with few members more then once such as poshswinger,Rohit patel,AlexaJobs,unna,splendidboy etc. (more in this list) DON.