Application: systemsettings (1.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2) (Compiled from sources)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-25-generic i686
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
As the kde plasma environmmet had crashed sucessively, turning the tray bar unoperable, I tried to find some update for this problem, and then the Software manager crashed as well. It happened twice in about 15 minutes (both situations)

The crash can be reproduced some of the time.

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7872710 (LWP 1611))]

Thread 2 (Thread 0xb50a7b70 (LWP 1616)):
#0  0x00190422 in __kernel_vsyscall ()
#1  0x00c80b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x039bf4eb in g_poll () from /lib/libglib-2.0.so.0
#3  0x039b20ac in ?? () from /lib/libglib-2.0.so.0
#4  0x039b24b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0436860f in QEventDispatcherGlib::processEvents (this=0x9b75288, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#6  0x0433b059 in QEventLoop::processEvents (this=0xb50a7290, flags=) at kernel/qeventloop.cpp:149
#7  0x0433b4aa in QEventLoop::exec (this=0xb50a7290, flags=...) at kernel/qeventloop.cpp:201
#8  0x042375a8 in QThread::exec (this=0x9c30e68) at thread/qthread.cpp:487
#9  0x0431ac1b in QInotifyFileSystemWatcherEngine::run (this=0x9c30e68) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x0423a32e in QThreadPrivate::start (arg=0x9c30e68) at thread/qthread_unix.cpp:248
#11 0x003e496e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0x00c8ea4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7872710 (LWP 1611)):
[KCrash Handler]
#6  0x01dccbad in PackageKit::Transaction::percentage() const () from /usr/lib/libpackagekit-qt.so.12
#7  0x01e5b1a2 in KpkTransactionBar::updateUi() () from /usr/lib/libkpackagekitlib.so
#8  0x01e452b3 in KpkTransactionBar::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkpackagekitlib.so
#9  0x04341c9a in QMetaObject::metacall (object=0x9ca86a8, cl=3215329948, idx=0, argv=0x9ca86a8) at kernel/qmetaobject.cpp:237
#10 0x043503d5 in QMetaObject::activate (sender=0x9b3c770, m=0x1df2cc4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#11 0x01dcc1a7 in PackageKit::Transaction::changed() () from /usr/lib/libpackagekit-qt.so.12
#12 0x01dce6f1 in PackageKit::Transaction::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#13 0x04341c9a in QMetaObject::metacall (object=0x9b3c770, cl=3215329948, idx=4, argv=0xbfa60c3c) at kernel/qmetaobject.cpp:237
#14 0x043503d5 in QMetaObject::activate (sender=0x9c41c50, m=0x1df2d84, local_signal_index=3, argv=0x0) at kernel/qobject.cpp:3293
#15 0x01dd5f07 in PackageKit::TransactionProxy::Changed() () from /usr/lib/libpackagekit-qt.so.12
#16 0x01dd691a in PackageKit::TransactionProxy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#17 0x002e9b34 in QDBusConnectionPrivate::deliverCall (this=0x9aab610, object=0x9c41c50, msg=..., metaTypes=..., slotIdx=8) at qdbusintegrator.cpp:904
#18 0x002f4ea7 in QDBusCallDeliveryEvent::placeMetaCall (this=0x9d0b3d8, object=0x9c41c50) at qdbusintegrator_p.h:101
#19 0x0434d3fe in QObject::event (this=0x9c41c50, e=0x9d0b3d8) at kernel/qobject.cpp:1248
#20 0x00e664dc in QApplicationPrivate::notify_helper (this=0x98d1cd8, receiver=0x9c41c50, e=0x9d0b3d8) at kernel/qapplication.cpp:4300
#21 0x00e6d05e in QApplication::notify (this=0xbfa6320c, receiver=0x9c41c50, e=0x9d0b3d8) at kernel/qapplication.cpp:3704
#22 0x009e9f2a in KApplication::notify (this=0xbfa6320c, receiver=0x9c41c50, event=0x9d0b3d8) at ../../kdeui/kernel/kapplication.cpp:302
#23 0x0433ca3b in QCoreApplication::notifyInternal (this=0xbfa6320c, receiver=0x9c41c50, event=0x9d0b3d8) at kernel/qcoreapplication.cpp:704
#24 0x0433f473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x98a72c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x98a72c0) at kernel/qcoreapplication.cpp:1345
#26 0x0433f5dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#27 0x04368adf in QCoreApplication::sendPostedEvents (s=0x98c8f10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#28 postEventSourceDispatch (s=0x98c8f10) at kernel/qeventdispatcher_glib.cpp:276
#29 0x039ae5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x039b22d8 in ?? () from /lib/libglib-2.0.so.0
#31 0x039b24b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x043685d5 in QEventDispatcherGlib::processEvents (this=0x98a74a0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#33 0x00f26135 in QGuiEventDispatcherGlib::processEvents (this=0x98a74a0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x0433b059 in QEventLoop::processEvents (this=0xbfa61b70, flags=) at kernel/qeventloop.cpp:149
#35 0x0433b4aa in QEventLoop::exec (this=0xbfa61b70, flags=...) at kernel/qeventloop.cpp:201
#36 0x013a54f3 in QDialog::exec (this=0x9cbca98) at dialogs/qdialog.cpp:546
#37 0x0095f324 in KMessageBox::createKMessageBox (dialog=0x9cbca98, icon=..., text=..., strlist=..., ask=..., checkboxReturn=0x0, options=..., details=..., notifyType=QMessageBox::Warning)
    at ../../kdeui/dialogs/kmessagebox.cpp:333
#38 0x0096074d in KMessageBox::createKMessageBox (dialog=0x9cbca98, icon=QMessageBox::Warning, text=..., strlist=..., ask=..., checkboxReturn=0x0, options=..., details=...)
    at ../../kdeui/dialogs/kmessagebox.cpp:151
#39 0x00960a80 in KMessageBox::detailedSorryWId (parent_id=62914611, text=..., details=..., caption=..., options=...) at ../../kdeui/dialogs/kmessagebox.cpp:951
#40 0x00960baf in KMessageBox::detailedSorry (parent=0x9c44298, text=..., details=..., caption=..., options=...) at ../../kdeui/dialogs/kmessagebox.cpp:928
#41 0x01d4035f in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#42 0x01d411f6 in ?? () from /usr/lib/kde4/kcm_kpk_update.so
#43 0x04341c9a in QMetaObject::metacall (object=0x9c44298, cl=3215329948, idx=-1079632004, argv=0xbfa61f78) at kernel/qmetaobject.cpp:237
#44 0x043503d5 in QMetaObject::activate (sender=0x9b3c770, m=0x1df2cc4, local_signal_index=7, argv=0xbfa620b4) at kernel/qobject.cpp:3293
#45 0x01dcbf69 in PackageKit::Transaction::errorCode(PackageKit::Client::ErrorType, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#46 0x01dd30c1 in PackageKit::TransactionPrivate::errorCode(QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#47 0x01dd437c in PackageKit::TransactionPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#48 0x04341c9a in QMetaObject::metacall (object=0x9cd8190, cl=3215329948, idx=6, argv=0xbfa62254) at kernel/qmetaobject.cpp:237
#49 0x043503d5 in QMetaObject::activate (sender=0x9c41c50, m=0x1df2d84, local_signal_index=7, argv=0xbfa62254) at kernel/qobject.cpp:3293
#50 0x01dd5da9 in PackageKit::TransactionProxy::ErrorCode(QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#51 0x01dd69b0 in PackageKit::TransactionProxy::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#52 0x002e9b34 in QDBusConnectionPrivate::deliverCall (this=0x9aab610, object=0x9c41c50, msg=..., metaTypes=..., slotIdx=12) at qdbusintegrator.cpp:904
#53 0x002f4ea7 in QDBusCallDeliveryEvent::placeMetaCall (this=0x9d4c450, object=0x9c41c50) at qdbusintegrator_p.h:101
#54 0x0434d3fe in QObject::event (this=0x9c41c50, e=0x9d4c450) at kernel/qobject.cpp:1248
#55 0x00e664dc in QApplicationPrivate::notify_helper (this=0x98d1cd8, receiver=0x9c41c50, e=0x9d4c450) at kernel/qapplication.cpp:4300
#56 0x00e6d05e in QApplication::notify (this=0xbfa6320c, receiver=0x9c41c50, e=0x9d4c450) at kernel/qapplication.cpp:3704
#57 0x009e9f2a in KApplication::notify (this=0xbfa6320c, receiver=0x9c41c50, event=0x9d4c450) at ../../kdeui/kernel/kapplication.cpp:302
#58 0x0433ca3b in QCoreApplication::notifyInternal (this=0xbfa6320c, receiver=0x9c41c50, event=0x9d4c450) at kernel/qcoreapplication.cpp:704
#59 0x0433f473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x98a72c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#60 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x98a72c0) at kernel/qcoreapplication.cpp:1345
#61 0x0433f5dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#62 0x04368adf in QCoreApplication::sendPostedEvents (s=0x98c8f10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#63 postEventSourceDispatch (s=0x98c8f10) at kernel/qeventdispatcher_glib.cpp:276
#64 0x039ae5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#65 0x039b22d8 in ?? () from /lib/libglib-2.0.so.0
#66 0x039b24b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#67 0x043685d5 in QEventDispatcherGlib::processEvents (this=0x98a74a0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#68 0x00f26135 in QGuiEventDispatcherGlib::processEvents (this=0x98a74a0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#69 0x0433b059 in QEventLoop::processEvents (this=0xbfa63164, flags=) at kernel/qeventloop.cpp:149
#70 0x0433b4aa in QEventLoop::exec (this=0xbfa63164, flags=...) at kernel/qeventloop.cpp:201
#71 0x0433f69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#72 0x00e66577 in QApplication::exec () at kernel/qapplication.cpp:3579
#73 0x08056b5e in _start ()

Reported using DrKonqi