MyBB Community Forums

I have recently deleted 3000 fake users and now there are 454 real users, but the board statistics box at the bottom of the forums is still showing 3,454 users registered!! What can be the problem?
Here is the image:

BTW, memberlist shows correct data.

run Recount & Rebuild tools (esp. Recount Statistics) available at Tools & Maintenance section

Thanks, Reputation added