Application: systemsettings (1.0)
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-51-generic i686
Distribution: Ubuntu 10.04.4 LTS

-- Information about the crash:
So I was upgrading my Kubuntu from 9.x -> 10.x which went OKAY but then I kept upgrading from 10.x -> 12.x and this crash happened.

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77b7710 (LWP 1247))]

Thread 2 (Thread 0xb500fb70 (LWP 1248)):
#0  0x00808f10 in ?? () from /usr/lib/libgthread-2.0.so.0
#1  0x0608b5a3 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#2  0x00c9974f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#3  0x00c6c149 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00c6c59a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00b68778 in QThread::exec() () from /usr/lib/libQtCore.so.4
#6  0x00c4bd0b in ?? () from /usr/lib/libQtCore.so.4
#7  0x00b6b4fe in ?? () from /usr/lib/libQtCore.so.4
#8  0x0074496e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0x00e563fe in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77b7710 (LWP 1247)):
[KCrash Handler]
#6  0x00c816cb in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x05377e19 in PackageKit::Transaction::finished(PackageKit::Transaction::ExitStatus, unsigned int) () from /usr/lib/libpackagekit-qt.so.12
#8  0x0537237c in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#9  0x05374453 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#10 0x00c72d8a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00c81445 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x0052823f in QDBusConnectionInterface::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#13 0x00528563 in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#14 0x00c72d8a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x00c81445 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x005280ef in QDBusConnectionInterface::NameOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#17 0x005285f3 in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#18 0x004e8bf4 in ?? () from /usr/lib/libQtDBus.so.4
#19 0x004f3f67 in ?? () from /usr/lib/libQtDBus.so.4
#20 0x00c7e44e in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#21 0x010d24dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x010d901e in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x002f040a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#24 0x00c6db2b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#25 0x00c70563 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#26 0x00c706cd in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#27 0x00c99c1f in ?? () from /usr/lib/libQtCore.so.4
#28 0x060876e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x0608b3d8 in ?? () from /lib/libglib-2.0.so.0
#30 0x0608b5b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00c99715 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0x01192225 in ?? () from /usr/lib/libQtGui.so.4
#33 0x00c6c149 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00c6c59a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x01611db3 in QDialog::exec() () from /usr/lib/libQtGui.so.4
#36 0x002653b4 in KMessageBox::createKMessageBox(KDialog*, QIcon const&, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&, QMessageBox::Icon) ()
   from /usr/lib/libkdeui.so.5
#37 0x002667dd in KMessageBox::createKMessageBox(KDialog*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) ()
   from /usr/lib/libkdeui.so.5
#38 0x00266e49 in KMessageBox::sorryWId(unsigned long, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib/libkdeui.so.5
#39 0x00266f88 in KMessageBox::sorry(QWidget*, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib/libkdeui.so.5
#40 0x03affe89 in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#41 0x03b01060 in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#42 0x00c72d8a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#43 0x00c81445 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#44 0x00c03979 in QProcess::finished(int, QProcess::ExitStatus) () from /usr/lib/libQtCore.so.4
#45 0x00c0929e in ?? () from /usr/lib/libQtCore.so.4
#46 0x00c0936e in QProcess::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#47 0x00c72d8a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#48 0x00c81445 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#49 0x00cd2bf3 in QSocketNotifier::activated(int) () from /usr/lib/libQtCore.so.4
#50 0x00c88a27 in QSocketNotifier::event(QEvent*) () from /usr/lib/libQtCore.so.4
#51 0x010d24dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#52 0x010d901e in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#53 0x002f040a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#54 0x00c6db2b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#55 0x00c99aea in ?? () from /usr/lib/libQtCore.so.4
#56 0x060876e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#57 0x0608b3d8 in ?? () from /lib/libglib-2.0.so.0
#58 0x0608b5b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#59 0x00c99715 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#60 0x01192225 in ?? () from /usr/lib/libQtGui.so.4
#61 0x00c6c149 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#62 0x00c6c59a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#63 0x00c7078f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#64 0x010d2577 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#65 0x08056b5e in _start ()

Reported using DrKonqi