Version:            (using KDE 4.2.2)
Installed from:    Ubuntu Packages

Clicked "Install New Language" in the
System Settings : General : Regional & Language
panel.

There was a dialog saying some language support packages
missing and it started to install those...
then it crashed...

Details:

Application: Install Package (install-package), signal SIGABRT
0x00007f6497adfcf0 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7f6498a636f0 (LWP 7184)):
[KCrash Handler]
#5  0x00007f6497a6afb5 in raise () from /lib/libc.so.6
#6  0x00007f6497a6cbc3 in abort () from /lib/libc.so.6
#7  0x00007f6497a63f09 in __assert_fail () from /lib/libc.so.6
#8  0x00007f64918cca9b in ?? () from /usr/lib/libX11.so.6
#9  0x00007f64918cd345 in _XEventsQueued () from /usr/lib/libX11.so.6
#10 0x00007f64918b5ed3 in XEventsQueued () from /usr/lib/libX11.so.6
#11 0x00007f6493176e07 in ?? () from /usr/lib/libQtGui.so.4
#12 0x00007f6494f2d1e2 in g_main_context_prepare () from /usr/lib/libglib-2.0.so.0
#13 0x00007f6494f2d5ff in ?? () from /usr/lib/libglib-2.0.so.0
#14 0x00007f6494f2da7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#15 0x00007f64962d6e6f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#16 0x00007f6493176bef in ?? () from /usr/lib/libQtGui.so.4
#17 0x00007f64962ae819 in QCoreApplication::processEvents () from /usr/lib/libQtCore.so.4
#18 0x00007f64947f9985 in ?? () from /usr/lib/python2.6/dist-packages/PyQt4/QtCore.so
#19 0x00000000004a2b03 in PyEval_EvalFrameEx ()
#20 0x00000000004a3dae in PyEval_EvalFrameEx ()
#21 0x00000000004a3dae in PyEval_EvalFrameEx ()
#22 0x00000000004a3dae in PyEval_EvalFrameEx ()
#23 0x00000000004a3dae in PyEval_EvalFrameEx ()
#24 0x00000000004a4649 in PyEval_EvalCodeEx ()
#25 0x00000000004a2cb0 in PyEval_EvalFrameEx ()
#26 0x00000000004a4649 in PyEval_EvalCodeEx ()
#27 0x00000000005329ad in ?? ()
#28 0x000000000041d3bd in PyObject_Call ()
#29 0x0000000000424f48 in ?? ()
#30 0x000000000041d3bd in PyObject_Call ()
#31 0x000000000049cd46 in PyEval_CallObjectWithKeywords ()
#32 0x00007f6494ab8e70 in sip_api_invoke_slot () from /usr/lib/python2.6/dist-packages/sip.so
#33 0x00007f649477e08d in ?? () from /usr/lib/python2.6/dist-packages/PyQt4/QtCore.so
#34 0x00007f649477ec7b in ?? () from /usr/lib/python2.6/dist-packages/PyQt4/QtCore.so
#35 0x00007f649477ed0d in ?? () from /usr/lib/python2.6/dist-packages/PyQt4/QtCore.so
#36 0x00007f64962c31f2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#37 0x00007f64962c852f in ?? () from /usr/lib/libQtCore.so.4
#38 0x00007f64962bd4d3 in QObject::event () from /usr/lib/libQtCore.so.4
#39 0x00007f64930de78d in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#40 0x00007f64930e697a in QApplication::notify () from /usr/lib/libQtGui.so.4
#41 0x00007f648fe8126b in KApplication::notify () from /usr/lib/libkdeui.so.5
#42 0x00007f64906e7f36 in sipKApplication::notify () from /usr/lib/python2.6/dist-packages/PyKDE4/kdeui.so
#43 0x00007f64962ad75c in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#44 0x00007f64962da7f6 in ?? () from /usr/lib/libQtCore.so.4
#45 0x00007f64962d6f0d in ?? () from /usr/lib/libQtCore.so.4
#46 0x00007f6494f2a20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#47 0x00007f6494f2d8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#48 0x00007f6494f2da7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#49 0x00007f64962d6e6f in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#50 0x00007f6493176bef in ?? () from /usr/lib/libQtGui.so.4
#51 0x00007f64962ac002 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#52 0x00007f64962ac3cd in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#53 0x00007f64962ae694 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#54 0x00007f64940278d9 in ?? () from /usr/lib/python2.6/dist-packages/PyQt4/QtGui.so
#55 0x00000000004a2b03 in PyEval_EvalFrameEx ()
#56 0x00000000004a4649 in PyEval_EvalCodeEx ()
#57 0x00000000004a4762 in PyEval_EvalCode ()
#58 0x00000000004c4c3c in PyRun_FileExFlags ()
#59 0x00000000004c4f6b in PyRun_SimpleFileExFlags ()
#60 0x00000000004189ce in Py_Main ()
#61 0x00007f6497a565a6 in __libc_start_main () from /lib/libc.so.6
#62 0x0000000000417ae9 in _start ()