Application that crashed: kcmshell4
Version of the application: 
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Only the browser makes the trouble, remaining computersystem is still working fine

 -- Backtrace:
Application: KDE-Kontrollmodul (kcmshell4), signal: Segmentation fault
[KCrash Handler]
#6  0x008c6ed7 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x01ab8357 in ?? () from /usr/lib/libkonq.so.5
#8  0x00aac4d5 in ?? () from /usr/lib/kde4/kcm_history.so
#9  0x00aac913 in ?? () from /usr/lib/kde4/kcm_history.so
#10 0x008c6263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x008c66d8 in QMetaObject::activate(QObject*, QMetaObject const*, int, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x01600cc1 in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#13 0x01329549 in ?? () from /usr/lib/libQtGui.so.4
#14 0x0132b1a4 in ?? () from /usr/lib/libQtGui.so.4
#15 0x0132b431 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#16 0x00fc9012 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#17 0x013293ee in QAbstractButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x013d366d in QPushButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x00f73f54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00f7c033 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00c93bfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#22 0x008b06cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#23 0x00f7af6e in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#24 0x00fe97c0 in ?? () from /usr/lib/libQtGui.so.4
#25 0x00fe8c4b in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#26 0x01015502 in ?? () from /usr/lib/libQtGui.so.4
#27 0x009dce88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0x009e0730 in ?? () from /lib/libglib-2.0.so.0
#29 0x009e0863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0x008db02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0x01014be5 in ?? () from /usr/lib/libQtGui.so.4
#32 0x008aec79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0x008af0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x01460d53 in QDialog::exec() () from /usr/lib/libQtGui.so.4
#35 0x00abdf8e in kdemain () from /usr/lib/libkdeinit4_kcmshell4.so
#36 0x0804865b in _start ()

Reported using DrKonqi