Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.3 (KDE 4.4.3)
Qt Version: 4.6.2
Operating System: Linux 2.6.31.12-0.2-desktop i686
Distribution: "openSUSE 11.2 (i586)"

-- Information about the crash:
OS Suse 11.2, Dell Inspiron 1520
2 monitor setup: Dell laptop Seiko (GeForce 8600M GT) and TVT WS231 Plalar monitor (secondary). Configuration via NVidia X Server Settings Panel.
Twinview setup. Dell set as primary display.
Attempt to apply settings causes Plasma to crash

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0xb61b15ed in QWidget::mapToParent(QPoint const&) const () from /usr/lib/libQtGui.so.4
#7  0xb61b166c in QWidget::mapTo(QWidget*, QPoint const&) const () from /usr/lib/libQtGui.so.4
#8  0xa63aee1b in QListData::insert(int) () from /usr/lib/kde4/plasma_applet_systemtray.so
#9  0xa63af27e in QListData::insert(int) () from /usr/lib/kde4/plasma_applet_systemtray.so
#10 0xb6c5714d in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#11 0xb6c65faa in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#12 0xb6cb95e5 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#13 0xb6c6e306 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQtCore.so.4
#14 0xb6c62ab4 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#15 0xb615f3fc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#16 0xb6166248 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#17 0xb6ee4c71 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0xb6c51dde in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#19 0xb6c820fe in ?? () from /usr/lib/libQtCore.so.4
#20 0xb6c7ec62 in ?? () from /usr/lib/libQtCore.so.4
#21 0xb58ca4c2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0xb58cdd98 in ?? () from /usr/lib/libglib-2.0.so.0
#23 0xb58cdebe in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#24 0xb6c7e931 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#25 0xb621fe0a in ?? () from /usr/lib/libQtGui.so.4
#26 0xb6c5044d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#27 0xb6c50899 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#28 0xb6c54a10 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#29 0xb615f4a4 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#30 0xb1d70953 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#31 0x0804e4af in _start ()

Reported using DrKonqi