Application that crashed: kcmshell4
Version of the application: 
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-14-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I'm having trouble opening the printer settings panel from the system settings. When I try to open it, it crashes. I didn't meet this behavior in the RC versions.

 -- Backtrace:
Application: KDE Control Module (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#5  strlen () at ../sysdeps/x86_64/strlen.S:48
#6  0x00007f7fd783270f in PyString_FromFormatV () from /usr/lib/libpython2.6.so.1.0
#7  0x00007f7fd7890b50 in PyErr_Format () from /usr/lib/libpython2.6.so.1.0
#8  0x00007f7fd67e18b5 in ?? () from /usr/lib/python2.6/dist-packages/sip.so
#9  0x00007f7fd5739788 in initkdecore () from /usr/lib/python2.6/dist-packages/PyKDE4/kdecore.so
#10 0x00007f7fd789bab6 in _PyImport_LoadDynamicModule () from /usr/lib/libpython2.6.so.1.0
#11 0x00007f7fd7899f49 in ?? () from /usr/lib/libpython2.6.so.1.0
#12 0x00007f7fd789a1e2 in ?? () from /usr/lib/libpython2.6.so.1.0
#13 0x00007f7fd789a888 in ?? () from /usr/lib/libpython2.6.so.1.0
#14 0x00007f7fd789ae3f in PyImport_ImportModuleLevel () from /usr/lib/libpython2.6.so.1.0
#15 0x00007f7fd787d1dd in ?? () from /usr/lib/libpython2.6.so.1.0
#16 0x00007f7fd77dbc48 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#17 0x00007f7fd787d7c6 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.6.so.1.0
#18 0x00007f7fd78816ad in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0
#19 0x00007f7fd78849a9 in PyEval_EvalCodeEx () from /usr/lib/libpython2.6.so.1.0
#20 0x00007f7fd7884ac2 in PyEval_EvalCode () from /usr/lib/libpython2.6.so.1.0
#21 0x00007f7fd78972f0 in PyImport_ExecCodeModuleEx () from /usr/lib/libpython2.6.so.1.0
#22 0x00007f7fd789907c in ?? () from /usr/lib/libpython2.6.so.1.0
#23 0x00007f7fd7899f49 in ?? () from /usr/lib/libpython2.6.so.1.0
#24 0x00007f7fd789a1e2 in ?? () from /usr/lib/libpython2.6.so.1.0
#25 0x00007f7fd789a83c in ?? () from /usr/lib/libpython2.6.so.1.0
#26 0x00007f7fd789ae3f in PyImport_ImportModuleLevel () from /usr/lib/libpython2.6.so.1.0
#27 0x00007f7fd787d1dd in ?? () from /usr/lib/libpython2.6.so.1.0
#28 0x00007f7fd77dbc48 in PyObject_Call () from /usr/lib/libpython2.6.so.1.0
#29 0x00007f7fd77de40e in PyObject_CallFunction () from /usr/lib/libpython2.6.so.1.0
#30 0x00007f7fd789b00c in PyImport_Import () from /usr/lib/libpython2.6.so.1.0
#31 0x00007f7fd789b1d5 in PyImport_ImportModule () from /usr/lib/libpython2.6.so.1.0
#32 0x00007f7fd7c3ce86 in ?? () from /usr/lib/kde4/kpythonpluginfactory.so
#33 0x00007f7fd7c3f1ac in ?? () from /usr/lib/kde4/kpythonpluginfactory.so
#34 0x00007f7fdd62bd24 in KCModuleLoader::loadModule (mod=@0x8a44d0, report=KCModuleLoader::Inline, parent=0x6df9d0, args=@0x8a44a0) at /build/buildd/kde4libs-4.3.0/kdecore/util/kpluginfactory.h:515
#35 0x00007f7fdd63137a in KCModuleProxyPrivate::loadModule (this=0x8a44a0) at /build/buildd/kde4libs-4.3.0/kutils/kcmoduleproxy.cpp:104
#36 0x00007f7fdd632395 in KCModuleProxy::realModule (this=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kutils/kcmoduleproxy.cpp:81
#37 0x00007f7fdd6324bc in KCModuleProxy::buttons (this=0x7ffff1e11750) at /build/buildd/kde4libs-4.3.0/kutils/kcmoduleproxy.cpp:297
#38 0x00007f7fdd62cef8 in KCMultiDialogPrivate::updateButtons (this=<value optimized out>, currentModule=0x7ffff1e11750) at /build/buildd/kde4libs-4.3.0/kutils/kcmultidialog.cpp:71
#39 0x00007f7fdd62df98 in KCMultiDialog::addModule (this=0x813820, moduleInfo=@0x7ffff1e18560, parentItem=0x0, args=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kutils/kcmultidialog.cpp:342
#40 0x00007f7fdd88dafe in kdemain (_argc=2, _argv=0x66caf0) at /build/buildd/kdebase-runtime-4.3.0/kcmshell/main.cpp:260
#41 0x0000000000407215 in launch (argc=2, _name=0x66c878 "/usr/bin/kcmshell4", args=<value optimized out>, cwd=0x0, envc=1, envs=0x66c8b9 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#42 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#43 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#44 0x0000000000408b26 in main (argc=2, argv=0x7ffff1e19838, envp=0x7ffff1e19850) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi