phpBB -- not all posts showing

Hi. I don’t know if this had anything to do with the problems with servers yesterday, but my database for phpBB seems to have gone a bit whack. My forum’s layout was reverted to the old subSilver default (I use skyLineGrey) and not all the posts are showing up. I had no trouble fixing the layout but I don’t know what to do about the posts. I checked my database and all the posts seem to still be there; they’re just not displayed in the forum.

Any ideas? About 80 posts aren’t showing up.