I've noticed this happening a few times over the past couple of days. The Last Post(er) on the side of a forum isn't up-to-date with who is actually the most recent poster. I've only noticed it a couple of times, and I was assuming it might be related to all of the slow downs we've had due to an abundance of traffic, but I thought maybe I should point it out anyway.
For example:
Yet when I go to check the topic, I'm the last poster:
Like I said I figure it was probably isolated incidents caused by the overload on the site and it is just taking a little while to update, but in case it is part of a bigger problem I thought I might mention it.
Edit: Yeah, and now ten minutes after this topic it is showing the last poster correctly. Hm, weird.