.
Thread 2 (process 5332):
#0  0x00007f271518b071 in clone () from /lib/libc.so.6
#1  0x00007f27145a492a in pthread_create@@GLIBC_2.2.5 ()
   from /lib/libpthread.so.0
#2  0x00007f2717c0b8b2 in QThread::start () from /usr/lib/libQtCore.so.4
#3  0x00007f270f6c8240 in Nepomuk::Repository::rebuildIndexIfNecessary ()
   from /usr/lib/kde4/nepomukstorage.so
#4  0x00007f270f6c9646 in Nepomuk::Repository::copyFinished ()
   from /usr/lib/kde4/nepomukstorage.so
#5  0x00007f270f6cc007 in Nepomuk::Repository::qt_metacall ()
   from /usr/lib/kde4/nepomukstorage.so
#6  0x00007f2717d08154 in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
#7  0x00007f2716a52872 in KJob::result () from /usr/lib/libkdecore.so.5
#8  0x00007f2716a52c3f in KJob::emitResult () from /usr/lib/libkdecore.so.5
#9  0x00007f270f6c7140 in Nepomuk::ModelCopyJob::slotCopy ()
   from /usr/lib/kde4/nepomukstorage.so
#10 0x00007f270f6c7525 in Nepomuk::ModelCopyJob::qt_metacall ()
   from /usr/lib/kde4/nepomukstorage.so
#11 0x00007f2717d08154 in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
#12 0x00007f2717d02a63 in QObject::event () from /usr/lib/libQtCore.so.4
#13 0x00007f2717215bfd in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#14 0x00007f271721d9ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#15 0x00007f2717cf3d81 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#16 0x00007f2717d1fac6 in ?? () from /usr/lib/libQtCore.so.4
#17 0x00007f2717d1c22d in ?? () from /usr/lib/libQtCore.so.4
#18 0x00007f27147f440b in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#19 0x00007f27147f7bcd in ?? () from /usr/lib/libglib-2.0.so.0
#20 0x00007f27147f7d8b in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#21 0x00007f2717d1c18f in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#22 0x00007f27172a7adf in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f2717cf26a2 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#24 0x00007f2717cf282d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#25 0x00007f2717cf4cdd in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#26 0x0000000000403851 in _start ()
.
Thread 1 (process 5379):
#0  0x00007f270eaf447c in librdf_hash_put () from /usr/lib/librdf.so.0
#1  0x00007f270eaf0ab2 in librdf_new_uri () from /usr/lib/librdf.so.0
#2  0x00007f270e65730e in raptor_namespaces_init ()
   from /usr/lib/libraptor.so.1
#3  0x00007f270e65746a in raptor_new_namespaces ()
   from /usr/lib/libraptor.so.1
#4  0x00007f270e8b9e8c in rasqal_new_query () from /usr/lib/librasqal.so.1
#5  0x00007f270eb07b66 in ?? () from /usr/lib/librdf.so.0
#6  0x00007f270eb05882 in librdf_new_query_from_factory ()
   from /usr/lib/librdf.so.0
#7  0x00007f270ed36653 in ?? ()
   from /usr/lib/soprano/libsoprano_redlandbackend.so
#8  0x00007f2715e6ec6d in Soprano::FilterModel::executeQuery ()
   from /usr/lib/libsoprano.so.4
#9  0x00007f270f27d53b in Soprano::Index::IndexFilterModel::rebuildIndex ()
   from /usr/lib/libsopranoindex.so.1
#10 0x00007f2717c0b392 in ?? () from /usr/lib/libQtCore.so.4
#11 0x00007f27145a53ba in start_thread () from /lib/libpthread.so.0
#12 0x00007f271518b0ad in clone () from /lib/libc.so.6
#13 0x0000000000000000 in ?? ()