[Megareus Rex]

Ok, here's my problem:

Not only does it incorrectly display the % of posts in a forum

Lancet Jades is most active in the forum Role Playing Games with a total of 631 posts contributing to 10516.67% of their total posts.

But also, it messes up the post count of users! (Not the actual post count, just the post count shown in member.php)

Total Posts: 6 (22.76 posts per day)

As you can see, the posts per day is still correct, but the actual number is messed up somehow. How can I fix these problems?

EDIT: Apparently, this only happens with some of my staff. Does this mean it's a usergroup thing? Or is it messing up because we have posts in private forums?