I know what the problem is:
If someone posts a thread of there own, then someone else posts a NEW thread, and then the first person posts in thier own thread, then thier message is tacked onto the original post, and the newest user is changed, but the newest post is not.
Poster1 posts thread A
Poster2 posts thread B
Poster1 replies in his own thread (A)
`> This message is added onto his original post, and the last post info is not updated corectly.
The problem lies in the mod that prevents the double posting