Well, it may depend when you posted and when you are looking at the "New Posts" section. When I just opened the New Posts, there's a whole page of posts all done within the past 6 minutes (DIS is a busy board!); I have to go back several pages to see what was "new" an hour ago. If you want to see your own prior posts, go to your profile page, and click on either "Recent Activity" or "Postings."