"Last Post" Not Updating Correctly

Hello,

I recently installed advanced forum module and so far it's been great, though I'm having an issue with the "last post". For some reason it's not correctly updating when new posts are made. After I installed the module the drupal system check system informed me I should update the database schema, which I did. After updating it the the module did update the last post, though it failed to continue to update as new posts were made.

I've disabled and cleared the cache numerous times, thinking that might have something to do with it, though at this point I'm pretty much at a loss. Here's a link to my forum, http://www.zuggaming.com/forum

Thanks in advance for any aid.

-Derek