My portal layout page has suddenly gone all wonky.

http://www.site.com/admin/layout.php

The first 8 entries - that have content in them - do not appear as links at all... there is simply nothing in the field for me to click, no text even.

Then all the other links have all mixed up.

It looks a bit of a mess.

Could I fix this by just re-uploading that one page, or might that cause me further problems?