.
Thread 2 (process 27352):
#0  0x00007fcefa4a032c in writev () from /lib/libc.so.6
#1  0x00007fcef532537c in _dbus_write_two (fd=11, 
    buffer1=<value optimized out>, start1=<value optimized out>, len1=164, 
    buffer2=0xccaf68, start2=0, len2=20) at dbus-sysdeps-unix.c:425
	vectors = {{iov_base = 0xc3ce20, iov_len = 144}, {
    iov_base = 0xc20760, iov_len = 20}}
	data2 = 0xc20760 "\017"
	bytes_written = 11865936
#2  0x00007fcef531d0c2 in do_writing (transport=0xb50f50)
    at dbus-transport-socket.c:596
	bytes_written = <value optimized out>
	message = (DBusMessage *) 0xccaf20
	body = (const DBusString *) 0xccaf68
	body_len = 20
	total_bytes_to_write = 164
	header = (const DBusString *) 0xccaf28
	header_len = 144
	total = 0
#3  0x00007fcef531d337 in socket_do_iteration (transport=0xb50f50, flags=1, 
    timeout_milliseconds=-1) at dbus-transport-socket.c:996
	poll_fd = {fd = 11, events = 0, revents = 0}
	poll_res = <value optimized out>
	poll_timeout = <value optimized out>
#4  0x00007fcef531b5e4 in _dbus_transport_do_iteration (transport=0xb50f50, 
    flags=1, timeout_milliseconds=-1) at dbus-transport.c:956
No locals.
#5  0x00007fcef53081ae in _dbus_connection_do_iteration_unlocked (
    connection=0xb51540, flags=1, timeout_milliseconds=-1)
    at dbus-connection.c:1150
No locals.
#6  0x00007fcef530828a in _dbus_connection_send_preallocated_unlocked_no_update (connection=0xb51540, preallocated=0xc3c170, message=0xccaf20, 
    client_serial=0x0) at dbus-connection.c:1971
	serial = 12829040
#7  0x00007fcef5308349 in _dbus_connection_send_unlocked_no_update (
    connection=0xb51540, message=0xccaf20, client_serial=0x0)
    at dbus-connection.c:3060
	preallocated = (DBusPreallocatedSend *) 0x7fff05518cf0
#8  0x00007fcef5309391 in dbus_connection_send_with_reply (
    connection=0xb51540, message=0xccaf20, pending_return=0x7fff05518ee0, 
    timeout_milliseconds=<value optimized out>) at dbus-connection.c:3225
	pending = (DBusPendingCall *) 0xbd7ee0
	serial = <value optimized out>
	status = <value optimized out>
	__FUNCTION__ = "dbus_connection_send_with_reply"
#9  0x00007fcef53094f1 in dbus_connection_send_with_reply_and_block (
    connection=0xb51540, message=0xccaf20, timeout_milliseconds=-1, 
    error=0x7fff05519050) at dbus-connection.c:3303
	reply = <value optimized out>
	pending = <value optimized out>
	__FUNCTION__ = "dbus_connection_send_with_reply_and_block"
#10 0x00007fcefc1211fb in ?? () from /usr/lib/libQtDBus.so.4
#11 0x00007fcefc12243f in ?? () from /usr/lib/libQtDBus.so.4
#12 0x00007fcefc12ced6 in ?? () from /usr/lib/libQtDBus.so.4
#13 0x00007fcefc12def6 in ?? () from /usr/lib/libQtDBus.so.4
#14 0x00007fcefc12e057 in QDBusInterface::QDBusInterface ()
   from /usr/lib/libQtDBus.so.4
#15 0x00007fcefb8ff99b in KNotificationManager (this=0xc48d00)
    at /build/buildd/kde4libs-4.2.0/kdeui/util/knotificationmanager.cpp:61
No locals.
#16 0x00007fcefb9000a2 in KNotificationManager::self ()
    at /build/buildd/kde4libs-4.2.0/kdeui/util/knotificationmanager.cpp:44
	_k_static_s_self_destroyed = false
	_k_static_s_self = {_q_value = 0x0}
#17 0x00007fcefb8fbd2b in KNotification::sendEvent (this=0xb93a20)
    at /build/buildd/kde4libs-4.2.0/kdeui/util/knotification.cpp:332
	appname = {static null = {<No data fields>}, static shared_null = {
    ref = {_q_value = 4742}, alloc = 0, size = 0, data = 0x7fcefd2f82da, 
    clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, 
    reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 53}, 
    alloc = 0, size = 0, data = 0x7fcefd2f82fa, clean = 0, simpletext = 0, 
    righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {
      0}}, d = 0xabd280, static codecForCStrings = 0x0}
#18 0x00007fcefb8fcfd0 in KNotification::qt_metacall (this=0xb93a20, 
    _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, 
    _a=0x7fff05519970)
    at /build/buildd/kde4libs-4.2.0/obj-x86_64-linux-gnu/kdeui/knotification.moc:102
No locals.
#19 0x00007fcefd025154 in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
#20 0x00007fcefd02b3bf in ?? () from /usr/lib/libQtCore.so.4
#21 0x00007fcefd01fa63 in QObject::event () from /usr/lib/libQtCore.so.4
#22 0x00007fcefc532bfd in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#23 0x00007fcefc53a9ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#24 0x00007fcefd010d81 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#25 0x00007fcefd03cac6 in ?? () from /usr/lib/libQtCore.so.4
#26 0x00007fcefd03922d in ?? () from /usr/lib/libQtCore.so.4
#27 0x00007fcef9b1130b in IA__g_main_context_dispatch (context=0xa99210)
    at /build/buildd/glib2.0-2.19.5/glib/gmain.c:1814
No locals.
#28 0x00007fcef9b14acd in g_main_context_iterate (context=0xa99210, block=1, 
    dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.19.5/glib/gmain.c:2448
	max_priority = 0
	timeout = 0
	some_ready = 1
	nfds = 4
	allocated_nfds = <value optimized out>
	fds = (GPollFD *) 0xb2fcb0
	__PRETTY_FUNCTION__ = "g_main_context_iterate"
#29 0x00007fcef9b14c8b in IA__g_main_context_iteration (context=0xa99210, 
    may_block=1) at /build/buildd/glib2.0-2.19.5/glib/gmain.c:2511
	retval = <value optimized out>
#30 0x00007fcefd03918f in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#31 0x00007fcefc5c4adf in ?? () from /usr/lib/libQtGui.so.4
#32 0x00007fcefd00f6a2 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#33 0x00007fcefd00f82d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#34 0x00007fcefd011cdd in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#35 0x0000000000403851 in main (argc=2, argv=0x7fff0551a818)
    at /build/buildd/kdebase-runtime-4.2.0/nepomuk/servicestub/main.cpp:149
	aboutData = {d = 0xa87620}
	options = {d = 0xa875b0}
	app = <incomplete type>
	args = <value optimized out>
	s = <incomplete type>
	serviceName = {static null = {<No data fields>}, 
  static shared_null = {ref = {_q_value = 4742}, alloc = 0, size = 0, 
    data = 0x7fcefd2f82da, clean = 0, simpletext = 0, righttoleft = 0, 
    asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, 
  static shared_empty = {ref = {_q_value = 53}, alloc = 0, size = 0, 
    data = 0x7fcefd2f82fa, clean = 0, simpletext = 0, righttoleft = 0, 
    asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0xaea870, 
  static codecForCStrings = 0x0}
	compData = {_vptr.KComponentData = 0x7fcefc0ec050, d = 0xaea8c0}
	services = {{p = {static shared_null = {ref = {_q_value = 709}, 
        alloc = 0, begin = 0, end = 0, sharable = 1, array = {0x0}}, 
      d = 0xb32110}, d = 0xb32110}}
	service = {d = 0xb31030}
	dependencies = {<QList<QString>> = {{p = {static shared_null = {
          ref = {_q_value = 709}, alloc = 0, begin = 0, end = 0, 
          sharable = 1, array = {0x0}}, d = 0x606400}, 
      d = 0x606400}}, <No data fields>}
.
Thread 1 (process 27503):
#0  librdf_hash_get_one (hash=0x0, key=0x7fceeae45b60) at rdf_hash.c:640
	value = <value optimized out>
	cursor = <value optimized out>
	status = <value optimized out>
#1  0x00007fcef3b58a10 in librdf_new_uri (world=0xc20930, 
    uri_string=0x7fcef36e9ed8 "http://www.w3.org/1999/02/22-rdf-syntax-ns#")
    at rdf_uri.c:135
	new_uri = <value optimized out>
	length = 43
	key = {world = 0x7fce00000005, data = 0x7fcef36e9ed8, size = 43, 
  next = 0xbf6800}
	value = {world = 0x39, data = 0x5f3d8fb80, size = 140526823841792, 
  next = 0x7fcefd30867a}
	old_value = <value optimized out>
#2  0x00007fcef36bf30e in raptor_namespaces_init (nstack=0xbd7cf0, 
    uri_handler=0x7fcef3d8fb80, uri_context=0xfefefefeff22726d, 
    error_handler=0x23736e, error_data=0xfefefefefefefeff, defaults=0)
    at raptor_namespace.c:133
	failures = <value optimized out>
#3  0x00007fcef36bf46a in raptor_new_namespaces (uri_handler=0x7fcef3d8fb80, 
    uri_context=0xc20930, 
    error_handler=0x7fcef391f2f0 <rasqal_query_simple_error>, 
    error_data=0xbd7900, defaults=0) at raptor_namespace.c:191
	nstack = <value optimized out>
#4  0x00007fcef3921e8c in rasqal_new_query (world=0xbf4be0, 
    name=0xbf6e40 "sparql", uri=<value optimized out>) at rasqal_query.c:103
	factory = (rasqal_query_engine_factory *) 0xbf6800
	query = (rasqal_query *) 0xbd7900
	uri_handler = (const raptor_uri_handler *) 0x7fcef3d8fb80
	uri_context = (void *) 0xc20930
#5  0x00007fcef3b6fb66 in librdf_query_rasqal_init (query=0xc2c080, 
    name=<value optimized out>, uri=<value optimized out>, 
    query_string=0x23736e <Address 0x23736e out of bounds>, 
    base_uri=0xfefefefefefefeff) at rdf_query_rasqal.c:113
	context = (librdf_query_rasqal_context *) 0xc27d00
#6  0x00007fcef3b6d882 in librdf_new_query_from_factory (world=0xbd3e40, 
    factory=0xbf6d30, name=0xc480d8 "sparql", uri=0x0, 
    query_string=0xc27f98 "select distinct ?r where { ?r ?p ?o . }", 
    base_uri=0x0) at rdf_query.c:371
	query = <value optimized out>
	__func__ = "librdf_new_query_from_factory"
#7  0x00007fcef3d9e653 in Soprano::Redland::RedlandModel::executeQuery (
    this=0xbf73f0, query=<value optimized out>, 
    language=Soprano::Query::QueryLanguageSparql, 
    userQueryLanguage=<value optimized out>)
    at ../../../backends/redland/redlandmodel.cpp:228
	q = <value optimized out>
	res = <value optimized out>
	result = <value optimized out>
#8  0x00007fcefb18bc6d in Soprano::FilterModel::executeQuery (this=0xc07440, 
    query=@0x7fceeae46020, language=Soprano::Query::QueryLanguageSparql, 
    userQueryLanguage=@0x7fceeae46010) at ../../soprano/filtermodel.cpp:164
	it = {<Soprano::Iterator<Soprano::BindingSet>> = {<Soprano::Error::ErrorCache> = {_vptr.ErrorCache = 0x7fceeae45ea0, d = 0x1}, d = {
      d = 0x7fceeae46020}}, <No data fields>}
#9  0x00007fcef42e553b in Soprano::Index::IndexFilterModel::rebuildIndex (
    this=0xc07440) at ../../index/indexfiltermodel.cpp:240
	it = {<Soprano::Iterator<Soprano::BindingSet>> = {<Soprano::Error::ErrorCache> = {_vptr.ErrorCache = 0x0, d = 0x0}, d = {d = 0x5}}, <No data fields>}
#10 0x00007fcefcf28392 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007fcef98c23ba in start_thread () from /lib/libpthread.so.0
#12 0x00007fcefa4a80ad in clone () from /lib/libc.so.6
#13 0x0000000000000000 in ?? ()