This just started popping up a few minutes ago. Nothing (that I know of) has changed on the server. Anyone have any ideas?

This is probably normal but may mean that the number of plugins in general is impacting performance.  I see it for several plugins on my server regularly.

Number of plugins isn't the general cause, it's the performance of the server and what the plugins are actually doing.

It did eventually go away. I unloaded and reloaded the plugin a few times. I've noticed if I restart the server, this message will keep coming up. However if I do the unload/reload, it's happy and stops. :shrug:

This is normal. I was getting it for "Pets" and "BlockRemover" Its just saying the server is taking X amount of time to calculate something. I think in this case, decay?