I frequent the Dead Rising 2 (PS3) forum. But it seems that when someone creates a new reply, which is shown on the main forum list, such as showing "2 (1)" to indicate that there's a new reply, that new reply is not showing up when I click to read that thread.
For example, just a short while ago, I created a new thread with FAQ's about the game. I can see under the "Last Post" heading that "Daitaro93" has posted into the thread. However, when I click the link and enter the thread, it still only shows just my post and no other replies.