Re: How to disable search in top margin?
I'm just guessing at possibilities, but if you have Site Identity feature activated (on tiki-admin.php?page=features) and, on the Site Identity admin page, "Site search" turned on, you'll get a new search box at the top of the page. Or if Site Identity custom code is used, it might include a search box. Another possibility is that you're using a theme that has a tiki-top_bar.tpl file modified to include the search box code.
-- Gary