Invisable posts?

[Hoowil]

Some of the topics I try to regularly read are showing new posts, but I can't get to them. One example is the finished project gallery in the sewing forum. It says new posts, but I haven't seen one in days, and the last poster name isn't the last one that I see. I'm getting this in a couple different threads. Anyone else having issues? Am I simply insane?

[Erynn]

It could be someone editing their post. Since the post is "new" they show up as being the last poster.