In SharePoint 2007 we get the search error: "File Not Found" when we
search from our wiki site. The dropdown search displays "All Sites".
If I select the dropdown "This Site: Case Method Wiki", the search
works correctly.

Then we noticed that if we search from other pages like document
librarys(other than a site home page), we get the same error, unless we
explicitly select to search its site from the dropdown box.

Is there a way to default the search dropdown box to default to "This
Site" so users don't see error messages. Do I have something
configured incorrectly or is this a bug.....