You haven't given much information to go on, but one thing to check is the story date/time. If the publish date is in the future, the story won't show up until that time has past.
I had a similar problem. I used the 'timezone hack' to adjust my computer time to correspond to my host's time. Just search the forum for timezone hack, and you will see a long thread on how it's done. You need to change the story.php as well.