Application that crashed: systemsettings
Version of the application: 1.0
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-1-amd64 x86_64

What I was doing when the application crashed:
Systemsettings -> Icons
Get New Themes
Highlight a theme and click on "Install"
Oxygen Balls appear and go round briefly but nothing else happens
Click on Systemsettings, leaving "hotnewstuff" window open, to see if the new theme has been made available - it hasn't
Click on "Get new themes" again to bring hotnewstuff window back to foreground
CRASH

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007fd045be5388 in QWidget::show (this=0x7fffb8e8d450) at /usr/include/qt4/QtGui/qwidget.h:473
#7  KNS::Engine::downloadDialogModal (this=0x7fffb8e8d450) at ../../../knewstuff/knewstuff2/engine.cpp:190
#8  0x00007fd046c68543 in IconThemesConfig::getNewTheme (this=0x3da4bc0) at ../../../kcontrol/icons/iconthemes.cpp:320
#9  0x00007fd046c6b468 in IconThemesConfig::qt_metacall (this=0x3da4bc0, _c=QMetaObject::InvokeMetaMethod, _id=57393024, _a=0x7fffb8e8d5d0) at ./iconthemes.moc:74
#10 0x00007fd057462682 in QMetaObject::activate (sender=0x29124d0, from_signal_index=<value optimized out>, to_signal_index=30, argv=0x0) at kernel/qobject.cpp:3112
#11 0x00007fd0586253e7 in QAbstractButton::clicked (this=0x36bbb20, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#12 0x00007fd05838469b in QAbstractButtonPrivate::emitClicked (this=0x2d50910) at widgets/qabstractbutton.cpp:543
#13 0x00007fd0583862bb in QAbstractButtonPrivate::click (this=0x2d50910) at widgets/qabstractbutton.cpp:536
#14 0x00007fd058386515 in QAbstractButton::mouseReleaseEvent (this=0x29124d0, e=0x7fffb8e8df20) at widgets/qabstractbutton.cpp:1115
#15 0x00007fd058062b4f in QWidget::event (this=0x29124d0, event=0x7fffb8e8df20) at kernel/qwidget.cpp:7549
#16 0x00007fd05801280d in QApplicationPrivate::notify_helper (this=0x20fc0e0, receiver=0x29124d0, e=0x7fffb8e8df20) at kernel/qapplication.cpp:4056
#17 0x00007fd05801afba in QApplication::notify (this=<value optimized out>, receiver=0x29124d0, e=0x7fffb8e8df20) at kernel/qapplication.cpp:3758
#18 0x00007fd058c6c43b in KApplication::notify (this=0x7fffb8e92640, receiver=0x29124d0, event=0x7fffb8e8df20) at ../../kdeui/kernel/kapplication.cpp:302
#19 0x00007fd05744d51c in QCoreApplication::notifyInternal (this=0x7fffb8e92640, receiver=0x29124d0, event=0x7fffb8e8df20) at kernel/qcoreapplication.cpp:610
#20 0x00007fd05801a268 in QCoreApplication::sendSpontaneousEvent (receiver=0x29124d0, event=0x7fffb8e8df20, alienWidget=0x29124d0, nativeWidget=0x241b970, buttonDown=<value optimized out>, 
    lastMouseReceiver=...) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#21 QApplicationPrivate::sendMouseEvent (receiver=0x29124d0, event=0x7fffb8e8df20, alienWidget=0x29124d0, nativeWidget=0x241b970, buttonDown=<value optimized out>, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#22 0x00007fd058082df9 in QETWidget::translateMouseEvent (this=0x241b970, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#23 0x00007fd058081baf in QApplication::x11ProcessEvent (this=0x7fffb8e92640, event=0x7fffb8e8f8f0) at kernel/qapplication_x11.cpp:3550
#24 0x00007fd0580a9e9c in x11EventSourceDispatch (s=0x20f48c0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#25 0x00007fd05434586a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0x00007fd054348eb8 in ?? () from /usr/lib/libglib-2.0.so.0
#27 0x00007fd05434906c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0x00007fd057475bff in QEventDispatcherGlib::processEvents (this=0x20c6490, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#29 0x00007fd0580a964f in QGuiEventDispatcherGlib::processEvents (this=0x36bbb20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x00007fd05744bde2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007fd05744c1b4 in QEventLoop::exec (this=0x7fffb8e8fc20, flags=...) at kernel/qeventloop.cpp:201
#32 0x00007fd045be5067 in KNS::EnginePrivate::workflow (this=0x2d5a7b0) at ../../../knewstuff/knewstuff2/engine.cpp:145
#33 0x00007fd045be5419 in KNS::Engine::downloadDialogModal (this=0x7fffb8e8fde0) at ../../../knewstuff/knewstuff2/engine.cpp:199
#34 0x00007fd046c68543 in IconThemesConfig::getNewTheme (this=0x2cfd660) at ../../../kcontrol/icons/iconthemes.cpp:320
#35 0x00007fd046c6b468 in IconThemesConfig::qt_metacall (this=0x2cfd660, _c=QMetaObject::InvokeMetaMethod, _id=57393024, _a=0x7fffb8e8ff60) at ./iconthemes.moc:74
#36 0x00007fd057462682 in QMetaObject::activate (sender=0x2d5af70, from_signal_index=<value optimized out>, to_signal_index=30, argv=0x0) at kernel/qobject.cpp:3112
#37 0x00007fd0586253e7 in QAbstractButton::clicked (this=0x36bbb20, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#38 0x00007fd05838469b in QAbstractButtonPrivate::emitClicked (this=0x2d51df0) at widgets/qabstractbutton.cpp:543
#39 0x00007fd0583862bb in QAbstractButtonPrivate::click (this=0x2d51df0) at widgets/qabstractbutton.cpp:536
#40 0x00007fd058386515 in QAbstractButton::mouseReleaseEvent (this=0x2d5af70, e=0x7fffb8e908b0) at widgets/qabstractbutton.cpp:1115
#41 0x00007fd058062b4f in QWidget::event (this=0x2d5af70, event=0x7fffb8e908b0) at kernel/qwidget.cpp:7549
#42 0x00007fd05801280d in QApplicationPrivate::notify_helper (this=0x20fc0e0, receiver=0x2d5af70, e=0x7fffb8e908b0) at kernel/qapplication.cpp:4056
#43 0x00007fd05801afba in QApplication::notify (this=<value optimized out>, receiver=0x2d5af70, e=0x7fffb8e908b0) at kernel/qapplication.cpp:3758
#44 0x00007fd058c6c43b in KApplication::notify (this=0x7fffb8e92640, receiver=0x2d5af70, event=0x7fffb8e908b0) at ../../kdeui/kernel/kapplication.cpp:302
#45 0x00007fd05744d51c in QCoreApplication::notifyInternal (this=0x7fffb8e92640, receiver=0x2d5af70, event=0x7fffb8e908b0) at kernel/qcoreapplication.cpp:610
#46 0x00007fd05801a268 in QCoreApplication::sendSpontaneousEvent (receiver=0x2d5af70, event=0x7fffb8e908b0, alienWidget=0x2d5af70, nativeWidget=0x241b970, buttonDown=<value optimized out>, 
    lastMouseReceiver=...) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#47 QApplicationPrivate::sendMouseEvent (receiver=0x2d5af70, event=0x7fffb8e908b0, alienWidget=0x2d5af70, nativeWidget=0x241b970, buttonDown=<value optimized out>, lastMouseReceiver=...)
    at kernel/qapplication.cpp:2924
#48 0x00007fd058082df9 in QETWidget::translateMouseEvent (this=0x241b970, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#49 0x00007fd058081baf in QApplication::x11ProcessEvent (this=0x7fffb8e92640, event=0x7fffb8e92280) at kernel/qapplication_x11.cpp:3550
#50 0x00007fd0580a9e9c in x11EventSourceDispatch (s=0x20f48c0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#51 0x00007fd05434586a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#52 0x00007fd054348eb8 in ?? () from /usr/lib/libglib-2.0.so.0
#53 0x00007fd05434906c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#54 0x00007fd057475bff in QEventDispatcherGlib::processEvents (this=0x20c6490, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#55 0x00007fd0580a964f in QGuiEventDispatcherGlib::processEvents (this=0x36bbb20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#56 0x00007fd05744bde2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#57 0x00007fd05744c1b4 in QEventLoop::exec (this=0x7fffb8e925b0, flags=...) at kernel/qeventloop.cpp:201
#58 0x00007fd05744e424 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#59 0x000000000040cada in main (argc=5, argv=0x7fffb8e928f8) at ../../../systemsettings/app/main.cpp:51

Reported using DrKonqi