Application that crashed: ksysguard
Version of the application: 4.3.3 (KDE 4.3.3)
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.9-174.fc12.i686 i686

What I was doing when the application crashed:
can set 2 of 3 background colors to black

 -- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
[KCrash Handler]
#6  0x0598d1d9 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#7  0x05970198 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#8  0x059711d6 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#9  0x04197c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x04198843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x049151b8 in KDialog::applyClicked() () from /usr/lib/libkdeui.so.5
#12 0x04917987 in KDialog::slotButtonClicked(int) () from /usr/lib/libkdeui.so.5
#13 0x04919f8c in KDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#14 0x049e327b in KPageDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#15 0x05972ecb in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#16 0x04197c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x04198843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x0419a7e4 in QSignalMapper::mapped(int) () from /usr/lib/libQtCore.so.4
#19 0x0419b08e in QSignalMapper::map(QObject*) () from /usr/lib/libQtCore.so.4
#20 0x0419b26f in QSignalMapper::map() () from /usr/lib/libQtCore.so.4
#21 0x0419ba4b in QSignalMapper::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x04197c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#23 0x04198059 in QMetaObject::activate(QObject*, QMetaObject const*, int, int, void**) () from /usr/lib/libQtCore.so.4
#24 0x056a72a2 in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#25 0x053cdb0a in ?? () from /usr/lib/libQtGui.so.4
#26 0x053cf755 in ?? () from /usr/lib/libQtGui.so.4
#27 0x053cf9f1 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#28 0x0506fd6f in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#29 0x053cd9af in QAbstractButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#30 0x0547802e in QPushButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#31 0x0501ab24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#32 0x05022a90 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#33 0x049b202b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#34 0x04181d73 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#35 0x05021b97 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#36 0x050904b8 in ?? () from /usr/lib/libQtGui.so.4
#37 0x0508f91d in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#38 0x050bac92 in ?? () from /usr/lib/libQtGui.so.4
#39 0x008d3128 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x008d6a58 in ?? () from /lib/libglib-2.0.so.0
#41 0x008d6b84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x041acb6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#43 0x050ba356 in ?? () from /usr/lib/libQtGui.so.4
#44 0x041802aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0x0418070a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#46 0x04182bf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#47 0x0501a9a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#48 0x059afbf3 in kdemain () from /usr/lib/libkdeinit4_ksysguard.so
#49 0x0804868c in _start ()

Reported using DrKonqi