Application: systemsettings (4.11.1)
KDE Platform Version: 4.11.1
Qt Version: 4.8.4
Operating System: Linux 3.11.0-8-generic x86_64
Distribution: Ubuntu Saucy Salamander (development branch)

-- Information about the crash:
can easily be reproduced.
a) change time zone to Berlin, 
b) click apply
c) select date & time tab
d) click apply
e) back to "Overview"

==> error "Unable to authenticate / execute teh action: 6,
==> final crash

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f36531117c0 (LWP 6691))]

Thread 3 (Thread 0x7f363609c700 (LWP 6694)):
#0  0x00007f36490a13ba in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f36490a1699 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3649061329 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3649061798 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f364906183c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3650882a76 in QEventDispatcherGlib::processEvents (this=0x7f36300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007f36508545ef in QEventLoop::processEvents (this=this@entry=0x7f363609bd70, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f36508548e5 in QEventLoop::exec (this=this@entry=0x7f363609bd70, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f365075388f in QThread::exec (this=this@entry=0xfd56b0) at thread/qthread.cpp:542
#9  0x00007f3650835d13 in QInotifyFileSystemWatcherEngine::run (this=0xfd56b0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f3650755f2f in QThreadPrivate::start (arg=0xfd56b0) at thread/qthread_unix.cpp:338
#11 0x00007f3649539f6e in start_thread (arg=0x7f363609c700) at pthread_create.c:311
#12 0x00007f3650109ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f362ffff700 (LWP 6696)):
#0  0x00007f36500fd47d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f3649061734 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f3649061b9a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f36349d72f6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f36490863c5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f3649539f6e in start_thread (arg=0x7f362ffff700) at pthread_create.c:311
#6  0x00007f3650109ecd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f36531117c0 (LWP 6691)):
[KCrash Handler]
#5  0x0000000000f901d0 in ?? ()
#6  0x00007f365086ac09 in QObject::connect (sender=sender@entry=0x18c8ca0, signal=0x7f365092f6ad "timeout()", signal@entry=0x7f365092f6ac "2timeout()", receiver=receiver@entry=0x1349d60, method=0x7f36356994fd "load()", method@entry=0x7f36356994fc "1load()", type=Qt::AutoConnection, type@entry=Qt::AutoCompatConnection) at kernel/qobject.cpp:2587
#7  0x00007f3650872b0c in QSingleShotTimer::QSingleShotTimer (this=0x18c8ca0, msec=5000, receiver=0x1349d60, member=0x7f36356994fc "1load()") at kernel/qtimer.cpp:300
#8  0x00007f3650872bce in QTimer::singleShot (msec=5000, receiver=0x1349d60, member=0x7f36356994fc "1load()") at kernel/qtimer.cpp:363
#9  0x00007f3635698433 in ?? () from /usr/lib/kde4/kcm_clock.so
#10 0x00007f36528262a7 in KCModuleProxy::save() () from /usr/lib/libkcmutils.so.4
#11 0x00007f36525fe453 in ModuleView::moduleSave(KCModuleProxy*) () from /usr/lib/libsystemsettingsview.so.2
#12 0x00007f36525ffe1a in ?? () from /usr/lib/libsystemsettingsview.so.2
#13 0x00007f3650869a58 in QMetaObject::activate (sender=0xfbb520, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff5b1a4fa0) at kernel/qobject.cpp:3539
#14 0x00007f365228d57f in KPushButton::authorized(KAuth::Action*) () from /usr/lib/libkdeui.so.5
#15 0x00007f3650869a58 in QMetaObject::activate (sender=sender@entry=0xfbb520, m=m@entry=0x7f3651f942a0 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fff5b1a50d0) at kernel/qobject.cpp:3539
#16 0x00007f3651b0f732 in QAbstractButton::clicked (this=this@entry=0xfbb520, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220
#17 0x00007f3651872f83 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x10012a0) at widgets/qabstractbutton.cpp:548
#18 0x00007f36518740f3 in QAbstractButtonPrivate::click (this=this@entry=0x10012a0) at widgets/qabstractbutton.cpp:541
#19 0x00007f36518741dc in QAbstractButton::mouseReleaseEvent (this=0xfbb520, e=0x7fff5b1a55c0) at widgets/qabstractbutton.cpp:1123
#20 0x00007f365151131e in QWidget::event (this=0xfbb520, event=0x7fff5b1a55c0) at kernel/qwidget.cpp:8375
#21 0x00007f36514c1dfc in QApplicationPrivate::notify_helper (this=this@entry=0xc0e940, receiver=receiver@entry=0xfbb520, e=e@entry=0x7fff5b1a55c0) at kernel/qapplication.cpp:4567
#22 0x00007f36514c85ad in QApplication::notify (this=<optimized out>, receiver=0xfbb520, e=0x7fff5b1a55c0) at kernel/qapplication.cpp:4110
#23 0x00007f36521cb9aa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#24 0x00007f36508558bd in QCoreApplication::notifyInternal (this=0x7fff5b1a5e20, receiver=receiver@entry=0xfbb520, event=event@entry=0x7fff5b1a55c0) at kernel/qcoreapplication.cpp:946
#25 0x00007f36514c7d63 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#26 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0xfbb520, event=event@entry=0x7fff5b1a55c0, alienWidget=alienWidget@entry=0xfbb520, nativeWidget=nativeWidget@entry=0xd83b30, buttonDown=buttonDown@entry=0x7f3651fa62f8 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3178
#27 0x00007f365153c7db in QETWidget::translateMouseEvent (this=this@entry=0xd83b30, event=event@entry=0x7fff5b1a5940) at kernel/qapplication_x11.cpp:4631
#28 0x00007f365153c079 in QApplication::x11ProcessEvent (this=0x7fff5b1a5e20, event=event@entry=0x7fff5b1a5940) at kernel/qapplication_x11.cpp:3624
#29 0x00007f3651563922 in x11EventSourceDispatch (s=0xc0fe00, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007f3649061446 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f3649061798 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f364906183c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f3650882a76 in QEventDispatcherGlib::processEvents (this=0xbc6ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#34 0x00007f36515639d6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x00007f36508545ef in QEventLoop::processEvents (this=this@entry=0x7fff5b1a5d20, flags=...) at kernel/qeventloop.cpp:149
#36 0x00007f36508548e5 in QEventLoop::exec (this=this@entry=0x7fff5b1a5d20, flags=...) at kernel/qeventloop.cpp:204
#37 0x00007f3650859e5b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#38 0x000000000040aadb in ?? ()
#39 0x00007f3650031de5 in __libc_start_main (main=0x40a6d0, argc=3, ubp_av=0x7fff5b1a5f68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5b1a5f58) at libc-start.c:260
#40 0x000000000040ab31 in _start ()

Possible duplicates by query: bug 324705, bug 324449, bug 324015, bug 324007, bug 323665.

Reported using DrKonqi