Version:           1.4 (using 4.3.90 (KDE 4.3.90 (KDE 4.4 RC1)), Kubuntu packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.31-18-generic

Nepomuk searching works from other locations powered by krunner (plasma-netbook and krunner itself), but the search toolbar in Dolphin always returns nothing.

For example, the URL returned by Dolphin's searchbar:
nepomuksearch:/?sparql=select distinct ?r  where { { { { ?r ?v1 ?v2 . ?v2 bif:contains "'Joe*'" . } UNION { ?r ?v1 ?v3 . ?v3 ?v4 ?v2 . ?v4 <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://www.w3.org/2000/01/rdf-schema#label> . ?v2 bif:contains "'Joe*'" . } . { ?r ?v5 ?v6 . ?v6 bif:contains "'Satriani*'" . } UNION { ?r ?v5 ?v7 . ?v7 ?v8 ?v6 . ?v8 <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> <http://www.w3.org/2000/01/rdf-schema#label> . ?v6 bif:contains "'Satriani*'" . } . } . { ?r a ?v9 . ?v9 <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#FileDataObject> . } UNION { ?r a ?v10 . ?v10 <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://www.semanticdesktop.org/ontologies/2007/03/22/nfo#Folder> . } . } .    }

Returns nothing, but typing the same search term in KRunner (or anything powered by it's nepomuk integration) returns the correct folder (bonus points for figuring out what the search was... ;) )