Application: kcmshell4 ()
KDE Platform Version: 4.5.3 (KDE 4.5.3)
Qt Version: 4.7.0
Operating System: Linux 2.6.32-27-generic i686
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
Recently, I've added the repositery "backports" of KDE, and a package have been removed. Now, the update manager crashes every time I use French language, but not when I use English (or any one other). 

The crash can be reproduced every time.

 -- Backtrace:
Application: KDE Control Module (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7747710 (LWP 2439))]

Thread 2 (Thread 0xb4cbdb70 (LWP 2718)):
#0  0x023f9a6d in g_main_context_prepare () from /lib/libglib-2.0.so.0
#1  0x023f9ee9 in ?? () from /lib/libglib-2.0.so.0
#2  0x023fa4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00f8a82f in QEventDispatcherGlib::processEvents (this=0x84b5978, flags=...) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00f5aa99 in QEventLoop::processEvents (this=0xb4cbd290, flags=) at kernel/qeventloop.cpp:149
#5  0x00f5af1a in QEventLoop::exec (this=0xb4cbd290, flags=...) at kernel/qeventloop.cpp:201
#6  0x00e57c5e in QThread::exec (this=0x865f168) at thread/qthread.cpp:490
#7  0x00f399ab in QInotifyFileSystemWatcherEngine::run (this=0x865f168) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00e5af39 in QThreadPrivate::start (arg=0x865f168) at thread/qthread_unix.cpp:266
#9  0x003a596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0x07227a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7747710 (LWP 2439)):
[KCrash Handler]
#6  0x00f74883 in QObjectPrivate::isSignalConnected (sender=0x85aabc8, m=0x4cdacc4, local_signal_index=11, argv=0xbfd997a4) at kernel/qobject_p.h:223
#7  QMetaObject::activate (sender=0x85aabc8, m=0x4cdacc4, local_signal_index=11, argv=0xbfd997a4) at kernel/qobject.cpp:3203
#8  0x04cb3e19 in PackageKit::Transaction::finished(PackageKit::Transaction::ExitStatus, unsigned int) () from /usr/lib/libpackagekit-qt.so.12
#9  0x04cae37c in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#10 0x04cb0453 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#11 0x00f61d4a in QMetaObject::metacall (object=0x85cb338, cl=13, idx=6, argv=0xbfd99930) at kernel/qmetaobject.cpp:237
#12 0x00f74ab5 in QMetaObject::activate (sender=0x85c9b80, m=0xbd0c88, local_signal_index=2, argv=0xbfd99930) at kernel/qobject.cpp:3280
#13 0x00bb8a1f in QDBusConnectionInterface::serviceOwnerChanged (this=0x85c9b80, _t1=..., _t2=..., _t3=...) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:210
#14 0x00bb8d43 in QDBusConnectionInterface::qt_metacall (this=0x85c9b80, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfd99b00) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:137
#15 0x00f61d4a in QMetaObject::metacall (object=0x85c9b80, cl=13, idx=7, argv=0xbfd99b00) at kernel/qmetaobject.cpp:237
#16 0x00f74ab5 in QMetaObject::activate (sender=0x85c9b80, m=0xbd0c88, local_signal_index=6, argv=0xbfd99b00) at kernel/qobject.cpp:3280
#17 0x00bb88cf in QDBusConnectionInterface::NameOwnerChanged (this=0x85c9b80, _t1=..., _t2=..., _t3=...) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:238
#18 0x00bb8dd3 in QDBusConnectionInterface::qt_metacall (this=0x85c9b80, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbfd99d0c) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:141
#19 0x00b771e4 in QDBusConnectionPrivate::deliverCall (this=0x85bb320, object=0x85c9b80, msg=..., metaTypes=..., slotIdx=11) at qdbusintegrator.cpp:919
#20 0x00b82927 in QDBusCallDeliveryEvent::placeMetaCall(QObject*) () from /usr/lib/libQtDBus.so.4
#21 0x00f6eac2 in QObject::event (this=0x85c9b80, e=0x0) at kernel/qobject.cpp:1219
#22 0x0301172c in QApplicationPrivate::notify_helper (this=0x8467718, receiver=0x85c9b80, e=0x84b48c0) at kernel/qapplication.cpp:4396
#23 0x0301777e in QApplication::notify (this=0xbfd9a604, receiver=0x85c9b80, e=0x84b48c0) at kernel/qapplication.cpp:3798
#24 0x0097e40a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00f5bfeb in QCoreApplication::notifyInternal (this=0xbfd9a604, receiver=0x85c9b80, event=0x84b48c0) at kernel/qcoreapplication.cpp:732
#26 0x00f5f24b in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8419580) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8419580) at kernel/qcoreapplication.cpp:1373
#28 0x00f5f40d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1266
#29 0x00f8ad04 in QCoreApplication::sendPostedEvents (s=0x8469980) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#30 postEventSourceDispatch (s=0x8469980) at kernel/qeventdispatcher_glib.cpp:277
#31 0x023f65e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x023fa2d8 in ?? () from /lib/libglib-2.0.so.0
#33 0x023fa4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x00f8a7f5 in QEventDispatcherGlib::processEvents (this=0x8450b78, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#35 0x030d2f85 in QGuiEventDispatcherGlib::processEvents (this=0x8450b78, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00f5aa99 in QEventLoop::processEvents (this=0xbfd9a530, flags=) at kernel/qeventloop.cpp:149
#37 0x00f5af1a in QEventLoop::exec (this=0xbfd9a530, flags=...) at kernel/qeventloop.cpp:201
#38 0x03579a23 in QDialog::exec (this=0x85882b0) at dialogs/qdialog.cpp:552
#39 0x02567846 in kdemain (_argc=2, _argv=0x845cf10) at ../../kcmshell/main.cpp:272
#40 0x0804e133 in _start ()

Reported using DrKonqi