Version:           4.2 beta2 (using Devel)
OS:                Linux
Installed from:    Compiled sources

Dolphin chrashed when I created a new folder called "Ny mappe". 

I'm not able to reproduce, but here is the backtrace:

Program: Dolphin (dolphin), signal SIGSEGV
0x00007f71aa35d621 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7f71afb016f0 (LWP 9703)):
[KCrash Handler]
#5  KDirModelNode::rowNumber (this=0x14fd9a0) at /usr/include/qt4/QtCore/qlist.h:83
#6  0x00007f71af56e078 in KDirModelPrivate::indexForNode (this=0x1d1bd50, node=0x14fd9a0, rowNumber=-1) at /build/buildd/kde4libs-4.1.85/kio/kio/kdirmodel.cpp:291
#7  0x00007f71af57221b in KDirModel::indexForUrl (this=0x1c592b0, url=@0x1a98dd8) at /build/buildd/kde4libs-4.1.85/kio/kio/kdirmodel.cpp:854
#8  0x00007f71aed4e48e in DolphinView::restoreCurrentItem (this=0x1a98d30) at /build/buildd/kdebase-4.1.85/apps/dolphin/src/dolphinview.cpp:1095
#9  0x00007f71aed51eaf in DolphinView::qt_metacall (this=0x1a98d30, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb7b348a0)
    at /build/buildd/kdebase-4.1.85/obj-x86_64-linux-gnu/apps/dolphin/src/dolphinview.moc:204
#10 0x00007f71ac2b7134 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#11 0x00007f71af5687c4 in KDirListerCache::slotUpdateResult (this=0x17523a0, j=<value optimized out>) at /build/buildd/kde4libs-4.1.85/kio/kio/kdirlister.cpp:1579
#12 0x00007f71af569927 in KDirListerCache::qt_metacall (this=0x17523a0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb7b34d30)
    at /build/buildd/kde4libs-4.1.85/obj-x86_64-linux-gnu/kio/kdirlister_p.moc:101
#13 0x00007f71ac2b7134 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#14 0x00007f71ad43d872 in KJob::result (this=0x14fd9a0, _t1=0x1d9c540) at /build/buildd/kde4libs-4.1.85/obj-x86_64-linux-gnu/kdecore/kjob.moc:186
#15 0x00007f71ad43dc3f in KJob::emitResult (this=0x1d9c540) at /build/buildd/kde4libs-4.1.85/kdecore/jobs/kjob.cpp:294
#16 0x00007f71af53ada0 in KIO::SimpleJob::slotFinished (this=0x1d9c540) at /build/buildd/kde4libs-4.1.85/kio/kio/job.cpp:489
#17 0x00007f71af53aed5 in KIO::ListJob::slotFinished (this=0x1d9c540) at /build/buildd/kde4libs-4.1.85/kio/kio/job.cpp:2416
#18 0x00007f71af53d72d in KIO::ListJob::qt_metacall (this=0x1d9c540, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb7b35070)
    at /build/buildd/kde4libs-4.1.85/obj-x86_64-linux-gnu/kio/jobclasses.moc:747
#19 0x00007f71ac2b7134 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0x00007f71af5f9661 in KIO::SlaveInterface::dispatch (this=0x1a6faf0, _cmd=104, rawdata=<value optimized out>) at /build/buildd/kde4libs-4.1.85/kio/kio/slaveinterface.cpp:175
#21 0x00007f71af5f6152 in KIO::SlaveInterface::dispatch (this=0x1a6faf0) at /build/buildd/kde4libs-4.1.85/kio/kio/slaveinterface.cpp:91
#22 0x00007f71af5e8343 in KIO::Slave::gotInput (this=0x1a6faf0) at /build/buildd/kde4libs-4.1.85/kio/kio/slave.cpp:322
#23 0x00007f71af5e9378 in KIO::Slave::qt_metacall (this=0x1a6faf0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffb7b35490) at /build/buildd/kde4libs-4.1.85/obj-x86_64-linux-gnu/kio/slave.moc:75
#24 0x00007f71ac2b7134 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#25 0x00007f71af506540 in KIO::ConnectionPrivate::dequeue (this=0x1c3b810) at /build/buildd/kde4libs-4.1.85/kio/kio/connection.cpp:82
#26 0x00007f71af50667a in KIO::Connection::qt_metacall (this=0x1c2fba0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x1cdb360)
    at /build/buildd/kde4libs-4.1.85/obj-x86_64-linux-gnu/kio/connection.moc:72
#27 0x00007f71ac2b1da5 in QObject::event () from /usr/lib/libQtCore.so.4
#28 0x00007f71ac756c3d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#29 0x00007f71ac75e9ba in QApplication::notify () from /usr/lib/libQtGui.so.4
#30 0x00007f71adc20f0b in KApplication::notify (this=0x7fffb7b35ee0, receiver=0x1c2fba0, event=0x1d9af10) at /build/buildd/kde4libs-4.1.85/kdeui/kernel/kapplication.cpp:307
#31 0x00007f71ac2a2d61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#32 0x00007f71ac2a39fa in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib/libQtCore.so.4
#33 0x00007f71ac2cb4d3 in ?? () from /usr/lib/libQtCore.so.4
#34 0x00007f71a7fe6d3b in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#35 0x00007f71a7fea50d in ?? () from /usr/lib/libglib-2.0.so.0
#36 0x00007f71a7fea6cb in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#37 0x00007f71ac2cb15f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#38 0x00007f71ac7e8a6f in ?? () from /usr/lib/libQtGui.so.4
#39 0x00007f71ac2a1682 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#40 0x00007f71ac2a180d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#41 0x00007f71ac2a3cbd in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#42 0x000000000044334d in main (argc=6, argv=0x7fffb7b363c8) at /build/buildd/kdebase-4.1.85/apps/dolphin/src/main.cpp:94