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 2.6.30.9-99.fc11.i686.PAE i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
I tried to change the Scale properties of the Network (make it fixed). Prior to that, I installed the 'Simple read and write Hard disk information' add-on.

 -- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
[KCrash Handler]
#6  0x0082dbf9 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#7  0x00810f60 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#8  0x00811fc6 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#9  0x006b0dc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x006b1a22 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x079e7a27 in KDialog::applyClicked() () from /usr/lib/libkdeui.so.5
#12 0x079ea1a7 in KDialog::slotButtonClicked(int) () from /usr/lib/libkdeui.so.5
#13 0x079ec7ec in KDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#14 0x07ab46ca in KPageDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#15 0x00813c7a in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkdeinit4_ksysguard.so
#16 0x006b0dc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x006b1a22 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x006b39b3 in QSignalMapper::mapped(int) () from /usr/lib/libQtCore.so.4
#19 0x006b424d in QSignalMapper::map(QObject*) () from /usr/lib/libQtCore.so.4
#20 0x006b442e in QSignalMapper::map() () from /usr/lib/libQtCore.so.4
#21 0x006b4c6b in QSignalMapper::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x006b0dc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#23 0x006b1238 in QMetaObject::activate(QObject*, QMetaObject const*, int, int, void**) () from /usr/lib/libQtCore.so.4
#24 0x04bd3061 in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#25 0x048fb989 in ?? () from /usr/lib/libQtGui.so.4
#26 0x048fd5c4 in ?? () from /usr/lib/libQtGui.so.4
#27 0x048fd861 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#28 0x0459dafa in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#29 0x048fb82e in QAbstractButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#30 0x049a5afd in QPushButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#31 0x045488b4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#32 0x045509db in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#33 0x07a837ba in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#34 0x0069b0ab in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#35 0x0454f91e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#36 0x045bdff0 in ?? () from /usr/lib/libQtGui.so.4
#37 0x045bd483 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#38 0x045e8562 in ?? () from /usr/lib/libQtGui.so.4
#39 0x00136308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#40 0x001399e0 in ?? () from /lib/libglib-2.0.so.0
#41 0x00139b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#42 0x006c5b7c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#43 0x045e7c45 in ?? () from /usr/lib/libQtGui.so.4
#44 0x00699639 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#45 0x00699a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#46 0x0069bf0f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#47 0x04548737 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#48 0x00850217 in kdemain () from /usr/lib/libkdeinit4_ksysguard.so
#49 0x0804868b in _start ()

Reported using DrKonqi