Version:            (using KDE 4.3.4)
Installed from:    FreeBSD Ports

I was playing with XKB settings.  I loaded my custom setting using xkbcomp command, then on first key press in konsole it crashed.
This is the stack trace (unfortunately without debug info):
#0  0x0000000800faeb14 in XkbTranslateKeyCode () from /usr/local/lib/libX11.so.6
#1  0x0000000800faf681 in XLookupString () from /usr/local/lib/libX11.so.6
#2  0x0000000800f81d3c in _XimLocalFilter () from /usr/local/lib/libX11.so.6
#3  0x00000008029c2093 in QXIMInputContext::x11FilterEvent () from /usr/local/lib/qt4/libQtGui.so.4
#4  0x00000008024acf6c in QApplication::x11ProcessEvent () from /usr/local/lib/qt4/libQtGui.so.4
#5  0x00000008024d45b2 in x11EventSourceDispatch () from /usr/local/lib/qt4/libQtGui.so.4
#6  0x0000000803717ee1 in g_main_context_dispatch () from /usr/local/lib/libglib-2.0.so.0
#7  0x000000080371b0be in g_main_context_check () from /usr/local/lib/libglib-2.0.so.0
#8  0x000000080371b57f in g_main_context_iteration () from /usr/local/lib/libglib-2.0.so.0
#9  0x00000008007dffbe in QEventDispatcherGlib::processEvents () from /usr/local/lib/qt4/libQtCore.so.4
#10 0x00000008024d43ff in QGuiEventDispatcherGlib::processEvents () from /usr/local/lib/qt4/libQtGui.so.4
#11 0x00000008007b4e2d in QEventLoop::processEvents () from /usr/local/lib/qt4/libQtCore.so.4
#12 0x00000008007b5076 in QEventLoop::exec () from /usr/local/lib/qt4/libQtCore.so.4
#13 0x00000008007b6d4e in QCoreApplication::exec () from /usr/local/lib/qt4/libQtCore.so.4
#14 0x0000000808046ef6 in kdemain () from /usr/local/kde4/lib/libkdeinit4_plasma-desktop.so