Application: systemsettings (1.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32.11-99.fc12.i686.PAE i686
Distribution: "Fedora release 12 (Constantine)"

-- Information about the crash:
I upgraded from F11 to F12. After the upgrade, everything works the same except for the software updates. Every time that you attempt to update the software, the system prompts you for the authentication information and then it crashes out every time even though the authentication information is correct. 

The crash can be reproduced every time.

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[KCrash Handler]
#6  0x00f1f24e in PackageKit::Transaction::percentage() const () from /usr/lib/libpackagekit-qt.so.12
#7  0x00f59463 in KpkTransaction::updateUi() () from /usr/lib/libkpackagekitlib.so
#8  0x00f5c456 in KpkTransaction::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkpackagekitlib.so
#9  0x0545a5db in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x054694af in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00f1edc8 in PackageKit::Transaction::changed() () from /usr/lib/libpackagekit-qt.so.12
#12 0x00f20c01 in PackageKit::Transaction::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#13 0x0545a5db in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x054694af in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x00f28108 in PackageKit::TransactionProxy::Changed() () from /usr/lib/libpackagekit-qt.so.12
#16 0x00f28ac3 in PackageKit::TransactionProxy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#17 0x00d0143c in ?? () from /usr/lib/libQtDBus.so.4
#18 0x00d0bf98 in ?? () from /usr/lib/libQtDBus.so.4
#19 0x05465c4e in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#20 0x05b52d2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x05b59556 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#22 0x066217cb in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#23 0x05455c03 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x05456ac3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#25 0x05456c1e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#26 0x0547e350 in ?? () from /usr/lib/libQtCore.so.4
#27 0x005b9fb8 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0x005bd8e8 in ?? () from /lib/libglib-2.0.so.0
#29 0x005bda14 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0x0547de46 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0x05c010e6 in ?? () from /usr/lib/libQtGui.so.4
#32 0x054542da in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0x0545461a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x06045a54 in QDialog::exec() () from /usr/lib/libQtGui.so.4
#35 0x065a5634 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
#36 0x065a6aaf in KMessageBox::createKMessageBox(KDialog*, QMessageBox::Icon, QString const&, QStringList const&, QString const&, bool*, QFlags<KMessageBox::Option>, QString const&) ()
   from /usr/lib/libkdeui.so.5
#37 0x065a6e03 in KMessageBox::detailedSorryWId(unsigned long, QString const&, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib/libkdeui.so.5
#38 0x065a6f30 in KMessageBox::detailedSorry(QWidget*, QString const&, QString const&, QString const&, QFlags<KMessageBox::Option>) () from /usr/lib/libkdeui.so.5
#39 0x00f5af5c in KpkTransaction::errorCode(PackageKit::Client::ErrorType, QString const&) () from /usr/lib/libkpackagekitlib.so
#40 0x00f5c41e in KpkTransaction::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkpackagekitlib.so
#41 0x0545a5db in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#42 0x054694af in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#43 0x00f1eb5a in PackageKit::Transaction::errorCode(PackageKit::Client::ErrorType, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#44 0x00f25442 in PackageKit::TransactionPrivate::errorCode(QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#45 0x00f264fc in PackageKit::TransactionPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#46 0x0545a5db in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#47 0x054694af in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#48 0x00f27f9a in PackageKit::TransactionProxy::ErrorCode(QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#49 0x00f28b59 in PackageKit::TransactionProxy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#50 0x00d0143c in ?? () from /usr/lib/libQtDBus.so.4
#51 0x00d0bf98 in ?? () from /usr/lib/libQtDBus.so.4
#52 0x05465c4e in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#53 0x05b52d2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#54 0x05b59556 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#55 0x066217cb in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#56 0x05455c03 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#57 0x05456ac3 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#58 0x05456c1e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#59 0x0547e350 in ?? () from /usr/lib/libQtCore.so.4
#60 0x005b9fb8 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#61 0x005bd8e8 in ?? () from /lib/libglib-2.0.so.0
#62 0x005bda14 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#63 0x0547de46 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#64 0x05c010e6 in ?? () from /usr/lib/libQtGui.so.4
#65 0x054542da in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#66 0x0545461a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#67 0x06045a54 in QDialog::exec() () from /usr/lib/libQtGui.so.4
#68 0x002a682c in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#69 0x002a6f7d in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#70 0x002a4f71 in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#71 0x06f6dfba in KCModuleProxy::save() () from /usr/lib/libkutils.so.4
#72 0x00d6d654 in ModuleView::moduleSave(KCModuleProxy*) () from /usr/lib/libsystemsettingsview.so.1
#73 0x00d6da29 in ModuleView::moduleSave() () from /usr/lib/libsystemsettingsview.so.1
#74 0x00d70933 in ModuleView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libsystemsettingsview.so.1
#75 0x0545a5db in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#76 0x054694af in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#77 0x06216bda in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#78 0x05f2a6ba in ?? () from /usr/lib/libQtGui.so.4
#79 0x05f2b8f5 in ?? () from /usr/lib/libQtGui.so.4
#80 0x05f2bbbe in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#81 0x05ba5b2d in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#82 0x05f2a55f in QAbstractButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#83 0x05fc7fc3 in QPushButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#84 0x05b52d2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#85 0x05b5a0fe in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#86 0x066217cb in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#87 0x05455c03 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#88 0x05b58e68 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#89 0x05bd60d0 in ?? () from /usr/lib/libQtGui.so.4
#90 0x05bd55e3 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#91 0x05c014fa in ?? () from /usr/lib/libQtGui.so.4
#92 0x005b9fb8 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#93 0x005bd8e8 in ?? () from /lib/libglib-2.0.so.0
#94 0x005bda14 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#95 0x0547de46 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#96 0x05c010e6 in ?? () from /usr/lib/libQtGui.so.4
#97 0x054542da in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#98 0x0545461a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#99 0x05456ce7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#100 0x05b52dd8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#101 0x08055dc8 in _start ()

Reported using DrKonqi