Incorrect dates for posts on certain threads

It seems that when going through some sections will have the latest post date as something wildly different than the one listed in the thread.

Two examples given would be, in the RPG discussion the threads:Happy/Sad Endings & RP's That..Don't Make It have listed the most recent posts as done 2 hours ago but inside the thread the time posted ago is three weeks and five days respectively.

Nothing too major but it is a bit disorienting at times

It's to do with the last vote ojpn a poll, IIRC

Ok, that makes sense

Yeah, a thread is bumped every time you vote on it. And it's listed as having the "last post by" whoever posted last, whether they were the one who voted or not.