Version:           1.99.0 (using KDE 4.7.2) 
OS:                Linux

in some kmail2 sessions, search does return immediately without any results. after shutdown/restart of pc this may work again. This is what happens in .xsession-errors, when I type "xxxx" as search for my main inbox folder:



"select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }" 
[/usr/bin/nepomukservicestub] virtual void Soprano::Server::LocalServer::incomingConnection(quintptr)
[/usr/bin/nepomukservicestub] void Soprano::Server::ServerCorePrivate::addConnection(Soprano::Server::ServerConnection*) New connection. New count: 12
[/usr/bin/nepomukservicestub] Soprano::ODBC::Connection::Connection() Soprano::Server::ServerConnection(0x7fa574033210)
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] Query failed: "sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }" 
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
"/usr/bin/nepomukservicestub(3317)" Soprano: "Invalid iterator."
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] Query failed: "sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3028)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "SQLExecDirect failed on query 'sparql select distinct ?r ?reqProp1 (bif:concat(bif:search_excerpt(bif:vector(bif:charset_recode('xxxx', '_WIDE_', 'UTF-8')), ?v2))) as ?_n_f_t_m_ex_ where { { ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 . ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#messageSubject> ?v2 . FILTER(bif:contains(?v2, "'xxxx'")) . ?r a <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> . } . ?r <http://www.semanticdesktop.org/ontologies/2007/08/15/nao#userVisible> ?v1 . FILTER(?v1>0) . }' (iODBC Error: [OpenLink][Virtuoso iODBC Driver][Virtuoso Server]IN013: Wide source charset specified, but the supplied string not wide)"
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(3317)" Soprano: "Invalid iterator."


Reproducible: Always

Steps to Reproduce:
I don't know why this happens, and how to reproduce

Actual Results:  
no search results, search seems to have errors

Expected Results:  
I want kmail to be able to search my mails

OS: Linux (x86_64) release 2.6.37.1-1.2-desktop
Compiler: gcc