Application that crashed: dolphin
Version of the application: 1.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-desktop-2mnb i686
Distribution: "Mandriva Linux 2010.0"

What I was doing when the application crashed:
Open Dolphin in user mode showing split screen.
In left pane display /home/user/.ssh/
In right pane show another folder on a different device (maybe not essential).
Select a file (in my case authorized_keys) and left-click/drag over to the right pane.
On releasing the mouse button Dolphin crashes.
This is repeatable.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[KCrash Handler]
#6  0xb752c5a4 in KServiceType::serviceOffersOffset (this=0x0) at /usr/src/debug/kdelibs-4.3.1/kdecore/services/kservicetype.cpp:230
#7  0xb7511de0 in KMimeTypeTrader::query (this=0x8c54c60, mimeType=@0xbff48ed8, genericServiceType=@0xbff48ed4, constraint=@0xbff48ed0)
    at /usr/src/debug/kdelibs-4.3.1/kdecore/services/kmimetypetrader.cpp:113
#8  0xb7cfc93f in KonqOperations::_addPluginActions () from /usr/lib/libkonq.so.5
#9  0xb7cfe180 in KonqOperations::doDropFileCopy () from /usr/lib/libkonq.so.5
#10 0xb7cfe28e in KonqOperations::asyncDrop () from /usr/lib/libkonq.so.5
#11 0xb7cfed4b in KonqOperations::qt_metacall () from /usr/lib/libkonq.so.5
#12 0xb6907c44 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#13 0xb6908965 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#14 0xb7cfbad5 in KonqOperations::statFinished () from /usr/lib/libkonq.so.5
#15 0xb7cfc5af in KonqOperations::slotStatResult () from /usr/lib/libkonq.so.5
#16 0xb7cfed2d in KonqOperations::qt_metacall () from /usr/lib/libkonq.so.5
#17 0xb6907c44 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#18 0xb6908965 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#19 0xb74d43e5 in KJob::result (this=0x8c2f838, _t1=0x8c2f838) at /usr/src/debug/kdelibs-4.3.1/build/kdecore/kjob.moc:188
#20 0xb74d48f9 in KJob::emitResult (this=0x8c2f838) at /usr/src/debug/kdelibs-4.3.1/kdecore/jobs/kjob.cpp:304
#21 0xb7ec0f6f in KIO::SimpleJob::slotFinished (this=0x8c2f838) at /usr/src/debug/kdelibs-4.3.1/kio/kio/job.cpp:477
#22 0xb7ec1c3f in KIO::StatJob::slotFinished (this=0x8c2f838) at /usr/src/debug/kdelibs-4.3.1/kio/kio/job.cpp:823
#23 0xb7ebfcd9 in KIO::StatJob::qt_metacall (this=0x8c2f838, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbff496ec) at /usr/src/debug/kdelibs-4.3.1/build/kio/jobclasses.moc:234
#24 0xb6907c44 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#25 0xb6908965 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#26 0xb7f92c85 in KIO::SlaveInterface::finished (this=0x8c64120) at /usr/src/debug/kdelibs-4.3.1/build/kio/slaveinterface.moc:165
#27 0xb7f96df4 in KIO::SlaveInterface::dispatch (this=0x8c64120, _cmd=104, rawdata=@0xbff49878) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slaveinterface.cpp:175
#28 0xb7f9319a in KIO::SlaveInterface::dispatch (this=0x8c64120) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slaveinterface.cpp:91
#29 0xb7f84795 in KIO::Slave::gotInput (this=0x8c64120) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slave.cpp:322
#30 0xb7f86d64 in KIO::Slave::qt_metacall (this=0x8c64120, _c=QMetaObject::InvokeMetaMethod, _id=30, _a=0xbff499bc) at /usr/src/debug/kdelibs-4.3.1/build/kio/slave.moc:76
#31 0xb6907c44 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#32 0xb6908965 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#33 0xb7e85375 in KIO::Connection::readyRead (this=0x8c6a8e0) at /usr/src/debug/kdelibs-4.3.1/build/kio/connection.moc:86
#34 0xb7e8725a in KIO::ConnectionPrivate::dequeue (this=0x8c65528) at /usr/src/debug/kdelibs-4.3.1/kio/kio/connection.cpp:82
#35 0xb7e873a7 in KIO::Connection::qt_metacall (this=0x8c6a8e0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x8c6f098) at /usr/src/debug/kdelibs-4.3.1/build/kio/connection.moc:73
#36 0xb690042a in QMetaCallEvent::placeMetaCall () from /usr/lib/libQtCore.so.4
#37 0xb6901b76 in QObject::event () from /usr/lib/libQtCore.so.4
#38 0xb6af66cc in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#39 0xb6afe10e in QApplication::notify () from /usr/lib/libQtGui.so.4
#40 0xb7843951 in KApplication::notify (this=0xbff4a1e4, receiver=0x8c6a8e0, event=0x8db5cf0) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#41 0xb68f175e in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#42 0xb68f23cc in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4
#43 0xb68f258c in QCoreApplication::sendPostedEvents () from /usr/lib/libQtCore.so.4
#44 0xb691d7bd in ?? () from /usr/lib/libQtCore.so.4
#45 0xb5e34b92 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#46 0xb5e38468 in ?? () from /usr/lib/libglib-2.0.so.0
#47 0xb5e3858e in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#48 0xb691d3c8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#49 0xb6b9851a in ?? () from /usr/lib/libQtGui.so.4
#50 0xb68efd7d in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#51 0xb68f01c9 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#52 0xb68f2660 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#53 0xb6af6544 in QApplication::exec () from /usr/lib/libQtGui.so.4
#54 0x080773ff in ?? ()
#55 0xb6557a36 in __libc_start_main () from /lib/i686/libc.so.6
#56 0x08062611 in _start ()

Reported using DrKonqi