"The maximum amount of posts on this page can display has been reached" What is this?

[DISLEX]

Originally Posted by Loco.M

that's a new one to me
do you have a mod doing it?
I've never seen it in the years I've used vb :|

Here is what I have:


I am not sure how to track down what is causing this. As far as I can tell, nothing is actually being deleted, as the notification states. Other than the strange message, everything seems to be okay.