It's the vBulletin backbone of the site. Someone did some configuring of something and it changed the user experience.
All the posts you posted, were posted. They're right there. You can't see them for around a minute, but they're all there.
I don't know (since I don't have admin permissions) but it looks like whatever code functions allow people to see "new posts" when they click on "Forum New Posts" has an erroneous line in it now.
|