Manage->Posts page missing

In my WordPress Admin Panel, the “Posts” page (Under the tab “Manage” and then under the subtab “Posts) is missing some content, meaning that the header is there, but none of the posts show up. This is indeed quite annoying to not be able to edit any of the posts I made, unless I follow the link from the actual blog. I have tried re-uploading the edit.php file, which is the one associated with this page, and nothing happens.
Anyone know what this issue could be? I certainly do not want to have to reinstall my wordpress, as that would be tedious and knowing myself, I’d probably make a mistake.
The link to the blog is http://www.nerdnewsradio.com.
Here is a screenshot:
http://img61.imageshack.us/img61/3667/safari001yv0.jpg
Thank you very much.