Application that crashed: kcmshell
Version of the application: 
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.29.4-167.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
I am ust running KDM theme manager, nothing anything. I don't think there is any problem in the system

 -- Backtrace:
Application: KDE Control Module (kcmshell), signal: Segmentation fault
[KCrash Handler]
#5  0x0000003fac84760e in QString::operator+=(QString const&) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#6  0x00007f62e1a42b12 in KDMThemeWidget::save() () from /usr/lib64/kde3/kcm_kdmtheme.so
#7  0x0000003fafa5333e in KCModuleProxy::save() () from /usr/lib64/libkutils.so.1
#8  0x0000003fafa54cd5 in KCMultiDialog::apply() () from /usr/lib64/libkutils.so.1
#9  0x0000003faec99ea4 in KDialogBase::qt_invoke(int, QUObject*) () from /usr/lib64/libkdeui.so.4
#10 0x0000003fac55be9c in QObject::activate_signal(QConnectionList*, QUObject*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#11 0x0000003fac55dd34 in QObject::activate_signal(int) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#12 0x0000003fac59354e in QWidget::event(QEvent*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#13 0x0000003fac4fa905 in QApplication::internalNotify(QObject*, QEvent*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#14 0x0000003fac4fc592 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#15 0x0000003facfe6b64 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdecore.so.4
#16 0x0000003fac499162 in QETWidget::translateMouseEvent(_XEvent const*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#17 0x0000003fac49806b in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#18 0x0000003fac4a9187 in QEventLoop::processEvents(unsigned int) () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#19 0x0000003fac513361 in QEventLoop::enterLoop() () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#20 0x0000003fac6e8950 in QDialog::exec() () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#21 0x0000003a7b60b2c6 in kdemain () from /usr/lib64/libkdeinit_kcmshell.so
#22 0x0000003febe1ea2d in __libc_start_main () from /lib64/libc.so.6
#23 0x0000000000400509 in __libc_start_main ()
#24 0x00007fffefda8a68 in ?? ()
#25 0x000000000000001c in ?? ()
#26 0x0000000000000002 in ?? ()
#27 0x00007fffefdaa876 in ?? ()
#28 0x00007fffefdaa87f in ?? ()
#29 0x0000000000000000 in ?? ()

Reported using DrKonqi