Version:           pre 4.2 trunk (using Devel)
Installed from:    Compiled sources

I used wget on a site to search for something.

Meanwhile I opened dolphin to the folder my wget was putting the site contents... and after some seconds, 
dolphin crashed.

Application: Dolphin (dolphin), signal SIGSEGV
0x00007f638ea24d91 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 18521)]

Thread 2 (Thread 0x7f63832a1950 (LWP 18541)):
#0  0x00007f638ea4ea52 in select () from /lib/libc.so.6
#1  0x00007f63903b4c96 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007f63902be76f in ?? () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007f639004b007 in start_thread () from /lib/libpthread.so.0
#4  0x00007f638ea5534d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6392fa1750 (LWP 18521)):
[KCrash Handler]
#5  0x00007f6392b4f8a2 in KDirModel::data (this=<value optimized out>, index=<value optimized out>, role=<value optimized out>) at /usr/include/qt4/QtCore/qlist.h:90
#6  0x00007f6392330db9 in DolphinModel::data (this=0x17146d0, index=@0x4000, role=743246400)
    at /home/public/portage/tmp/portage/kde-base/dolphin-9999/work/dolphin-9999/dolphin/src/dolphinmodel.cpp:70
#7  0x00007f638fb9d083 in QSortFilterProxyModel::data () from /usr/lib64/qt4/libQtGui.so.4
#8  0x00007f6392b6af94 in KFileItemDelegate::Private::itemSize (this=<value optimized out>, index=@0x7fff9b0ec9b0, item=@0x7fff9b0ec600) at /usr/include/qt4/QtCore/qabstractitemmodel.h:373
#9  0x00007f6392b6b9f4 in KFileItemDelegate::Private::display (this=0x17c2440, index=@0x7fff9b0ec9b0)
    at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kio/kio/kfileitemdelegate.cpp:893
#10 0x00007f6392b6d747 in KFileItemDelegate::Private::initStyleOption (this=0x17c2440, option=0x7fff9b0ec760, index=@0x7fff9b0ec9b0)
    at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kio/kio/kfileitemdelegate.cpp:796
#11 0x00007f6392b6e784 in KFileItemDelegate::sizeHint (this=0x87ab80, option=@0x7fff9b0ec8f0, index=@0x7fff9b0ec9b0)
    at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kio/kio/kfileitemdelegate.cpp:855
#12 0x00007f638fb470dc in QTreeView::indexRowSizeHint () from /usr/lib64/qt4/libQtGui.so.4
#13 0x00007f638fb50c7f in ?? () from /usr/lib64/qt4/libQtGui.so.4
#14 0x00007f638fb567f8 in QTreeView::doItemsLayout () from /usr/lib64/qt4/libQtGui.so.4
#15 0x00007f638fb48e5d in QTreeView::paintEvent () from /usr/lib64/qt4/libQtGui.so.4
#16 0x00007f63923262db in DolphinDetailsView::paintEvent (this=0x8da330, event=0x17146d0)
    at /home/public/portage/tmp/portage/kde-base/dolphin-9999/work/dolphin-9999/dolphin/src/dolphindetailsview.cpp:362
#17 0x00007f638f66c0c4 in QWidget::event () from /usr/lib64/qt4/libQtGui.so.4
#18 0x00007f638fb13ce5 in QAbstractItemView::viewportEvent () from /usr/lib64/qt4/libQtGui.so.4
#19 0x00007f638fb5469f in QTreeView::viewportEvent () from /usr/lib64/qt4/libQtGui.so.4
#20 0x00007f63903db4f7 in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib64/qt4/libQtCore.so.4
#21 0x00007f638f60946c in QApplicationPrivate::notify_helper () from /usr/lib64/qt4/libQtGui.so.4
#22 0x00007f638f60ab1a in QApplication::notify () from /usr/lib64/qt4/libQtGui.so.4
#23 0x00007f6391200c8b in KApplication::notify (this=0x7fff9b0f0180, receiver=0x1889e50, event=0x7fff9b0ed9b0)
    at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kdeui/kernel/kapplication.cpp:307
#24 0x00007f63903dbd6e in QCoreApplication::notifyInternal () from /usr/lib64/qt4/libQtCore.so.4
#25 0x00007f638f66ab3f in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#26 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#27 0x00007f638f66b163 in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#28 0x00007f638f66b163 in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#29 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#30 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#31 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#32 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#33 0x00007f638f66b163 in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#34 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#35 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#36 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#37 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#38 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#39 0x00007f638f66b23a in QWidgetPrivate::paintSiblingsRecursive () from /usr/lib64/qt4/libQtGui.so.4
#40 0x00007f638f66a7dc in QWidgetPrivate::drawWidget () from /usr/lib64/qt4/libQtGui.so.4
#41 0x00007f638f7f4729 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#42 0x00007f638f7f4b27 in ?? () from /usr/lib64/qt4/libQtGui.so.4
#43 0x00007f638f66bee5 in QWidget::event () from /usr/lib64/qt4/libQtGui.so.4
#44 0x00007f638f9e836b in QMainWindow::event () from /usr/lib64/qt4/libQtGui.so.4
#45 0x00007f6391301af8 in KXmlGuiWindow::event (this=0x8da330, ev=0x17146d0) at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kdeui/xmlgui/kxmlguiwindow.cpp:131
#46 0x00007f638f60949d in QApplicationPrivate::notify_helper () from /usr/lib64/qt4/libQtGui.so.4
#47 0x00007f638f60ab1a in QApplication::notify () from /usr/lib64/qt4/libQtGui.so.4
#48 0x00007f6391200c8b in KApplication::notify (this=0x7fff9b0f0180, receiver=0x77d080, event=0x17037b0)
    at /home/public/portage/tmp/portage/kde-base/kdelibs-9999/work/kdelibs-9999/kdeui/kernel/kapplication.cpp:307
#49 0x00007f63903dbd6e in QCoreApplication::notifyInternal () from /usr/lib64/qt4/libQtCore.so.4
#50 0x00007f63903e018f in QCoreApplicationPrivate::sendPostedEvents () from /usr/lib64/qt4/libQtCore.so.4
#51 0x00007f639040e480 in QEventDispatcherUNIX::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#52 0x00007f638f6ae13a in ?? () from /usr/lib64/qt4/libQtGui.so.4
#53 0x00007f63903da9b2 in QEventLoop::processEvents () from /usr/lib64/qt4/libQtCore.so.4
#54 0x00007f63903dae4d in QEventLoop::exec () from /usr/lib64/qt4/libQtCore.so.4
#55 0x00007f63903e04af in QCoreApplication::exec () from /usr/lib64/qt4/libQtCore.so.4
#56 0x0000000000441ef5 in main (argc=6, argv=0x7fff9b0f0668) at /home/public/portage/tmp/portage/kde-base/dolphin-9999/work/dolphin-9999/dolphin/src/main.cpp:94