Application that crashed: kxkb
Version of the application: 2.0
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I was installing firefox 2 in wine doors and kde layout switcher crashed. I also had firefox (linux), ktorrent, kmourse, kclipboard and ktts running.

 -- Backtrace:
Application: KDE Keyboard Layout Switcher (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  QString (this=0x14a3a80, layoutUnit=...) at /usr/include/qt4/QtCore/qstring.h:711
#6  LayoutUnit::toPair (this=0x14a3a80, layoutUnit=...) at ../../../kcontrol/kxkb/kxkbconfig.h:78
#7  KxkbWidget::setCurrentLayout (this=0x14a3a80, layoutUnit=...) at ../../../kcontrol/kxkb/kxkbwidget.cpp:49
#8  0x00007f4654597aef in KxkbCore::initTray (this=0x13ba640) at ../../../kcontrol/kxkb/kxkbcore.cpp:303
#9  0x00007f4654599cf4 in KxkbCore::updateGroupsFromServer (this=0x13ba640) at ../../../kcontrol/kxkb/kxkbcore.cpp:486
#10 0x00007f465459a47f in KxkbCore::x11EventFilter (this=0x13ba640, event=0x7fffa0f9e4f0) at ../../../kcontrol/kxkb/kxkbcore.cpp:449
#11 0x00007f465edc1f56 in KAppX11HackWidget::publicx11Event (this=<value optimized out>, _event=0x7fffa0f9e4f0) at ../../kdeui/kernel/kapplication.cpp:911
#12 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fffa0f9e4f0) at ../../kdeui/kernel/kapplication.cpp:961
#13 0x00007f465e1e6391 in qt_x11EventFilter (ev=0x7fffa0f9e4f0) at kernel/qapplication_x11.cpp:375
#14 0x00007f465e1f6a24 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffa0f9e4f0) at kernel/qapplication_x11.cpp:3271
#15 0x00007f465e220d0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#16 0x00007f465d0bcbce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#17 0x00007f465d0c0598 in ?? () from /lib/libglib-2.0.so.0
#18 0x00007f465d0c06c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#19 0x00007f46602041a6 in QEventDispatcherGlib::processEvents (this=0x130eb70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#20 0x00007f465e2204be in QGuiEventDispatcherGlib::processEvents (this=0x14a3a80, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#21 0x00007f46601da532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#22 0x00007f46601da904 in QEventLoop::exec (this=0x7fffa0f9e820, flags=) at kernel/qeventloop.cpp:201
#23 0x00007f46601dcab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#24 0x00007f465459c255 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../kcontrol/kxkb/kxkbapp.cpp:92
#25 0x0000000000406da8 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=1, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a299 "0") at ../../kinit/kinit.cpp:677
#26 0x0000000000407aa0 in handle_launcher_request (sock=8, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#27 0x0000000000407f51 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1362
#28 0x0000000000408bb2 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi