see my own Wiki : http://tyrcho.free.fr
Have you checked your error.log?
I'm afraid I don't have an error.log since my webserver (free.fr) doesn't allow me to write files on its disk.
I also have another problem : I can't use Remove_Page to delete a page on my Wiki : I have to delete it in the database. Remove_Page keeps complaining about Home_Page being edited (which is false) and asking if I am sure I want to remove the page. But I can't confirm ...
Great Wiki here ! :-)