Version:            (using Devel)
Installed from:    Compiled sources
Compiler:          GCC-4.1.2 
OS:                Linux

Here is the backtrace :

Application : KGet (kget), signal SIGSEGV
[?1034hUsing host libthread_db library "/lib/libthread_db.so.1".

Thread 1 (Thread 0xb5f406d0 (LWP 7329)):
[KCrash Handler]
#6  0xb6b5b591 in Nepomuk::ResourceData::isValid (this=0xb0) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/nepomuk/core/resourcedata.cpp:463
#7  0xb6b79e80 in Nepomuk::Resource::isValid (this=0x8457100) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/nepomuk/core/resource.cpp:262
#8  0xb7c1bbee in NepomukHandler::saveFileProperties (this=0x84570f8) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdenetwork/kget/core/nepomukhandler.cpp:62
#9  0xb7c05571 in Transfer::setStatus (this=0x8166970, jobStatus=Job::Finished, text=@0xbfd11da0, pix=@0xbfd11d8c)
    at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdenetwork/kget/core/transfer.cpp:220
#10 0xb46e12f7 in TransferKio::slotResult (this=0x8166968, kioJob=0x84570f8) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdenetwork/kget/transfer-plugins/kio/transferKio.cpp:121
#11 0xb46e1630 in TransferKio::qt_metacall (this=0x8166968, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbfd11ebc)
    at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdenetwork/kget/transfer-plugins/kio/transferKio.moc:90
#12 0xb69be79b in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#13 0xb69bee04 in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#14 0xb769d5e0 in KJob::result (this=0x84570f8, _t1=0x84570f8) at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kdecore/kjob.moc:186
#15 0xb769db60 in KJob::emitResult (this=0x84570f8) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kdecore/jobs/kjob.cpp:290
#16 0xb790e5d2 in KIO::FileCopyJob::slotResult (this=0x84570f8, job=0x8484c40) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/job.cpp:2191
#17 0xb790f359 in KIO::FileCopyJob::qt_metacall (this=0x84570f8, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfd1200c)
    at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/jobclasses.moc:658
#18 0xb69be79b in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#19 0xb69bee04 in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#20 0xb769d5e0 in KJob::result (this=0x8484c40, _t1=0x8484c40) at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kdecore/kjob.moc:186
#21 0xb769db60 in KJob::emitResult (this=0x8484c40) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kdecore/jobs/kjob.cpp:290
#22 0xb79083af in KIO::SimpleJob::slotFinished (this=0x8484c40) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/job.cpp:498
#23 0xb790877d in KIO::TransferJob::slotFinished (this=0x8484c40) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/job.cpp:967
#24 0xb790f78b in KIO::TransferJob::qt_metacall (this=0x8484c40, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfd12248)
    at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/jobclasses.moc:336
#25 0xb69be79b in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#26 0xb69bee04 in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#27 0xb79b78dd in KIO::SlaveInterface::finished (this=0x844e478) at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/slaveinterface.moc:163
#28 0xb79b97b2 in KIO::SlaveInterface::dispatch (this=0x844e478, _cmd=104, rawdata=@0xbfd123f4) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/slaveinterface.cpp:176
#29 0xb79ba397 in KIO::SlaveInterface::dispatch (this=0x844e478) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/slaveinterface.cpp:91
#30 0xb79aba32 in KIO::Slave::gotInput (this=0x844e478) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/slave.cpp:319
#31 0xb79acea0 in KIO::Slave::qt_metacall (this=0x844e478, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfd124e8) at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/slave.moc:75
#32 0xb69be79b in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#33 0xb69bee04 in QMetaObject::activate () from /usr/lib/qt4/libQtCore.so.4
#34 0xb78d6503 in KIO::Connection::readyRead (this=0x8463a38) at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/connection.moc:84
#35 0xb78d74f1 in KIO::ConnectionPrivate::dequeue (this=0x845fff0) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kio/kio/connection.cpp:82
#36 0xb78d8413 in KIO::Connection::qt_metacall (this=0x8463a38, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x83ecb58)
    at /home/loacoon/Documents/Downloads/SVN/KDE4/build/kdelibs/kio/connection.moc:72
#37 0xb69b8059 in QMetaCallEvent::placeMetaCall () from /usr/lib/qt4/libQtCore.so.4
#38 0xb69b9f91 in QObject::event () from /usr/lib/qt4/libQtCore.so.4
#39 0xb6dc3a5f in QApplicationPrivate::notify_helper () from /usr/lib/qt4/libQtGui.so.4
#40 0xb6dc8489 in QApplication::notify () from /usr/lib/qt4/libQtGui.so.4
#41 0xb7debae8 in KApplication::notify (this=0xbfd12c88, receiver=0x8463a38, event=0x817ead0) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdelibs/kdeui/kernel/kapplication.cpp:311
#42 0xb69a98f7 in QCoreApplication::notifyInternal () from /usr/lib/qt4/libQtCore.so.4
#43 0xb69aaa8d in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/qt4/libQtCore.so.4
#44 0xb69aad2d in QCoreApplication::sendPostedEvents () from /usr/lib/qt4/libQtCore.so.4
#45 0xb6e52638 in ?? () from /usr/lib/qt4/libQtGui.so.4
#46 0xb69a8acd in QEventLoop::processEvents () from /usr/lib/qt4/libQtCore.so.4
#47 0xb69a8c6d in QEventLoop::exec () from /usr/lib/qt4/libQtCore.so.4
#48 0xb69aade6 in QCoreApplication::exec () from /usr/lib/qt4/libQtCore.so.4
#49 0xb6dc3387 in QApplication::exec () from /usr/lib/qt4/libQtGui.so.4
#50 0x0809e3fb in main (argc=3, argv=0xbfd12e64) at /home/loacoon/Documents/Downloads/SVN/KDE4/KDE/kdenetwork/kget/main.cpp:153