Application: systemsettings (1.0)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
I had the "Add and Remove Software" dialog open, had made some change to a package, and when I closed System Settings, discarding the changes, it crashed.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78c3710 (LWP 29517))]

Thread 2 (Thread 0xb5034b70 (LWP 29518)):
#0  0x008d8422 in __kernel_vsyscall ()
#1  0x00b03b86 in *__GI___poll (fds=0xb99ff4, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#2  0x030b44eb in g_poll () from /lib/libglib-2.0.so.0
#3  0x030a70ac in ?? () from /lib/libglib-2.0.so.0
#4  0x030a74b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x0578760f in QEventDispatcherGlib::processEvents (this=0x8e65458, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#6  0x0575a059 in QEventLoop::processEvents (this=0xb5034290, flags=) at kernel/qeventloop.cpp:149
#7  0x0575a4aa in QEventLoop::exec (this=0xb5034290, flags=...) at kernel/qeventloop.cpp:201
#8  0x056565a8 in QThread::exec (this=0x90cae00) at thread/qthread.cpp:487
#9  0x05739c1b in QInotifyFileSystemWatcherEngine::run (this=0x90cae00) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x0565932e in QThreadPrivate::start (arg=0x90cae00) at thread/qthread_unix.cpp:248
#11 0x009d496e in start_thread (arg=0xb5034b70) at pthread_create.c:300
#12 0x00b11a0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb78c3710 (LWP 29517)):
[KCrash Handler]
#6  0x01310d9a in QDialog::result (this=0x9390fc0) at dialogs/qdialog.cpp:432
#7  0x04ae7b0f in ?? () from /usr/lib/kde4/kcm_kpk_addrm.so
#8  0x04ae80cb in ?? () from /usr/lib/kde4/kcm_kpk_addrm.so
#9  0x05760c9a in QMetaObject::metacall (object=0x90ed3c0, cl=QMetaObject::ReadProperty, idx=-1075789728, argv=0x9390fc0) at kernel/qmetaobject.cpp:237
#10 0x0576f3d5 in QMetaObject::activate (sender=0x915a060, m=0x4af4a10, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3293
#11 0x04ae46a7 in ?? () from /usr/lib/kde4/kcm_kpk_addrm.so
#12 0x00a141da in KCModuleProxy::save (this=0x90e48e0) at ../../kutils/kcmoduleproxy.cpp:279
#13 0x0063cf03 in ModuleView::moduleSave (this=0x8fc96d8, module=0x8e17330) at ../../../systemsettings/core/ModuleView.cpp:302
#14 0x0063d4b9 in ModuleView::moduleSave (this=0x8fc96d8) at ../../../systemsettings/core/ModuleView.cpp:293
#15 0x006407e3 in ModuleView::qt_metacall (this=0x8fc96d8, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbfe0c398) at ./ModuleView.moc:95
#16 0x05760c9a in QMetaObject::metacall (object=0x8fc96d8, cl=QMetaObject::ReadProperty, idx=32, argv=0xbfe0c398) at kernel/qmetaobject.cpp:237
#17 0x0576f3d5 in QMetaObject::activate (sender=0x8fd0848, m=0x170e8c4, local_signal_index=2, argv=0xbfe0c398) at kernel/qobject.cpp:3293
#18 0x014fe479 in QAbstractButton::clicked (this=0x8fd0848, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#19 0x011ddea9 in QAbstractButtonPrivate::emitClicked (this=0x8fd28d8) at widgets/qabstractbutton.cpp:546
#20 0x011decf4 in QAbstractButtonPrivate::click (this=0x8fd28d8) at widgets/qabstractbutton.cpp:539
#21 0x011defae in QAbstractButton::mouseReleaseEvent (this=0x8fd0848, e=0xbfe0cad0) at widgets/qabstractbutton.cpp:1121
#22 0x00e317f8 in QWidget::event (this=0x8fd0848, event=0xbfe0cad0) at kernel/qwidget.cpp:7998
#23 0x011ddd4e in QAbstractButton::event (this=0x8fd0848, e=0x8e17330) at widgets/qabstractbutton.cpp:1080
#24 0x012881f2 in QPushButton::event (this=0x8fd0848, e=0xbfe0cad0) at widgets/qpushbutton.cpp:679
#25 0x00dd34dc in QApplicationPrivate::notify_helper (this=0x8d51238, receiver=0x8fd0848, e=0xbfe0cad0) at kernel/qapplication.cpp:4300
#26 0x00dda9f7 in QApplication::notify (this=0xbfe0d38c, receiver=0x8fd0848, e=0xbfe0cad0) at kernel/qapplication.cpp:3865
#27 0x002eff2a in KApplication::notify (this=0xbfe0d38c, receiver=0x8fd0848, event=0xbfe0cad0) at ../../kdeui/kernel/kapplication.cpp:302
#28 0x0575ba3b in QCoreApplication::notifyInternal (this=0xbfe0d38c, receiver=0x8fd0848, event=0xbfe0cad0) at kernel/qcoreapplication.cpp:704
#29 0x00dd9952 in QCoreApplication::sendEvent (receiver=0x8fd0848, event=0xbfe0cad0, alienWidget=0x8fd0848, nativeWidget=0x8deefc0, buttonDown=0x1717058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#30 QApplicationPrivate::sendMouseEvent (receiver=0x8fd0848, event=0xbfe0cad0, alienWidget=0x8fd0848, nativeWidget=0x8deefc0, buttonDown=0x1717058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#31 0x00e65088 in QETWidget::translateMouseEvent (this=0x8deefc0, event=0xbfe0cfec) at kernel/qapplication_x11.cpp:4368
#32 0x00e64511 in QApplication::x11ProcessEvent (this=0xbfe0d38c, event=0xbfe0cfec) at kernel/qapplication_x11.cpp:3379
#33 0x00e9360a in x11EventSourceDispatch (s=0x8d54368, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#34 0x030a35e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#35 0x030a72d8 in ?? () from /lib/libglib-2.0.so.0
#36 0x030a74b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#37 0x057875d5 in QEventDispatcherGlib::processEvents (this=0x8d2a4a0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#38 0x00e93135 in QGuiEventDispatcherGlib::processEvents (this=0x8d2a4a0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#39 0x0575a059 in QEventLoop::processEvents (this=0xbfe0d2e4, flags=) at kernel/qeventloop.cpp:149
#40 0x0575a4aa in QEventLoop::exec (this=0xbfe0d2e4, flags=...) at kernel/qeventloop.cpp:201
#41 0x0575e69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#42 0x00dd3577 in QApplication::exec () at kernel/qapplication.cpp:3579
#43 0x08056b5e in main (argc=5, argv=0xbfe0d4d4) at ../../../systemsettings/app/main.cpp:49

Reported using DrKonqi