Version:           Version 1.0 KDE 4.3.4 "release 2" (using KDE 4.3.4)
OS:                Linux
Installed from:    openSUSE RPMs

I am using KDE 4.3.4 (4.3.4-2.1) from the Opensuse repositories (KDE stable branch) on an Opensuse 11.2 system (x86_64  architecture / quad core processor).  

My mouse is a Logitech MX 1000 Laser Mouse (USB receiver). 

Independent of which "Tab" I use and independent of which mouse setting I change a crash happens as soon as I try to return to the main window of the system settings dialog. 

The crash happens always when returning to the main window by clicking on the corresponding back arrow in the upper part of system settings.

The crash happens even when no changes of the mouse settings are done at all. It is enough to enter the area of mouse settings and then to return to the main window of the "system settings" dialog. The resulting crash can always be reproduced.   

However, any changes of mouse settings can be activated on the respective page of "system settings" and are even saved in the configuration files. The crash is only related to the return of the introductory page of system settings. 

This crash was certainly not presented in KDE 4.3.1 on an Opensuse 11.1 system and on the present Opensuse 11.2 system. I did not check whether it appeared on the Opensuse 11.2 system after installing the proprietory nvidia drivers for my graphics card but I think it is independent of the nvidia driver.

The system messages are: 

Application: Systemeinstellungen (systemsettings), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fb046858464 in usb_close () from /usr/lib64/libusb-0.1.so.4
#6  0x00007fb046aab3c5 in ?? () from /usr/lib64/kde4/kcm_input.so
#7  0x00007fb050cb803c in QObjectPrivate::deleteChildren() () from /usr/lib64/libQtCore.so.4
#8  0x00007fb051873cc3 in QWidget::~QWidget() () from /usr/lib64/libQtGui.so.4
#9  0x00007fb051c1a8c1 in QStackedWidget::~QStackedWidget() () from /usr/lib64/libQtGui.so.4
#10 0x00007fb050cb803c in QObjectPrivate::deleteChildren() () from /usr/lib64/libQtCore.so.4
#11 0x00007fb051873cc3 in QWidget::~QWidget() () from /usr/lib64/libQtGui.so.4
#12 0x00007fb051c28cd1 in QTabWidget::~QTabWidget() () from /usr/lib64/libQtGui.so.4
#13 0x00007fb050cb803c in QObjectPrivate::deleteChildren() () from /usr/lib64/libQtCore.so.4
#14 0x00007fb051873cc3 in QWidget::~QWidget() () from /usr/lib64/libQtGui.so.4
#15 0x00007fb046aa12c5 in ?? () from /usr/lib64/kde4/kcm_input.so
#16 0x00007fb052a605e4 in KCModuleProxy::deleteClient() () from /usr/lib64/libkutils.so.4
#17 0x00007fb052a61006 in KCModuleProxy::~KCModuleProxy() () from /usr/lib64/libkutils.so.4
#18 0x00007fb05282c193 in ModuleView::closeModules() () from /usr/lib64/libsystemsettingsview.so
#19 0x00007fb046f36c96 in ?? () from /usr/lib64/kde4/icon_mode.so
#20 0x00007fb046f3742c in ?? () from /usr/lib64/kde4/icon_mode.so
#21 0x00007fb050cbefbc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#22 0x00007fb051823457 in QAction::triggered(bool) () from /usr/lib64/libQtGui.so.4
#23 0x00007fb05182489f in QAction::activate(QAction::ActionEvent) () from /usr/lib64/libQtGui.so.4
#24 0x00007fb051b717fa in ?? () from /usr/lib64/libQtGui.so.4
#25 0x00007fb051b71a85 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQtGui.so.4
#26 0x00007fb051c3fa3a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQtGui.so.4
#27 0x00007fb051877cf0 in QWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#28 0x00007fb0518292ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#29 0x00007fb0518303c1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#30 0x00007fb052423f26 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#31 0x00007fb050ca9ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#32 0x00007fb05182fc90 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib64/libQtGui.so.4
#33 0x00007fb051895cfe in ?? () from /usr/lib64/libQtGui.so.4
#34 0x00007fb051894d9a in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/libQtGui.so.4
#35 0x00007fb0518bcb6c in ?? () from /usr/lib64/libQtGui.so.4
#36 0x00007fb04d8f7dde in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#37 0x00007fb04d8fb7a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#38 0x00007fb04d8fb8d0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#39 0x00007fb050cd23a3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#40 0x00007fb0518bc31e in ?? () from /usr/lib64/libQtGui.so.4
#41 0x00007fb050ca8712 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#42 0x00007fb050ca8ae4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#43 0x00007fb050caac99 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#44 0x000000000040cbd9 in _start ()