So, I'm on the edge of the Top Ten (score), and by double-tapping Krang I can boost my score. Most of today was pretty nice -- no negative challenge bonus because I was in the Top Ten most of the day. By the way, when in the Top Ten, you don't get the negative bonus, but can still get positive bonus. Isn't that grand! (that's sarcasm -- I think it is terrifically non-plussing)
Tonight I get home and I am out of the Top Ten. So I get back into the Top Ten (on my character page and on the stats page), and yet I still have the negative challenge bonus. When does the "Top Ten" status kick in? I have been in the Top Ten for at least ten minutes now, and I am still getting negative challenge bonus. How long do I have to wait?
Hm, clan re-calc just took place, and now I have no negative bonus. So, does the Top Ten exemption get flagged at the same time as clan standings are re-figured? Or is it more often than that?