[Koha] problem searching in opac

Ubuntu 9.10 64bit Koha 3.01.00.124 I can search all day in the staff client, but get 'No result found! No results match your search for "kw,wrdl:tree"' in the opac. I'm sure its a setting I've changed in the Opac, but can't seem to find it. Any clues thoughts admonishments?