Application: systemsettings (1.0)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-17-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I open system configuration, try to play test sound in mutimedia section, after it I close system configuration and get crash.

The crash can be reproduced every time.

 -- Backtrace:
Application: Параметры системы (systemsettings), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4a306c0800 (LWP 2346))]

Thread 4 (Thread 0x7f4a1fefb710 (LWP 2347)):
#0  0x00007f4a2dc27f93 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f4a2ae58559 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f4a2ae589ac in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f4a2e37b4f6 in QEventDispatcherGlib::processEvents (this=0x1ded6c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f4a2e350922 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f4a2e350cfc in QEventLoop::exec (this=0x7f4a1fefad10, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f4a2e25ad59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f4a2e331118 in QInotifyFileSystemWatcherEngine::run (this=0x1dec860) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f4a2e25d775 in QThreadPrivate::start (arg=0x1dec860) at thread/qthread_unix.cpp:248
#9  0x00007f4a2b7cb9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f4a2dc346dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f4a1e482710 (LWP 2362)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f4a1566f081 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f4a2b7cb9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f4a2dc346dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4a0f469710 (LWP 2377)):
#0  0x00007f4a2b7ce3ff in __pthread_mutex_lock (mutex=0x2309d78) at pthread_mutex_lock.c:62
#1  0x00007f4a2ae585be in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f4a2ae589ac in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f4a2e37b4f6 in QEventDispatcherGlib::processEvents (this=0x1fc3590, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#4  0x00007f4a2e350922 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f4a2e350cfc in QEventLoop::exec (this=0x7f4a0f468cf0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f4a2e25ad59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#7  0x00007f4a158cb570 in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#8  0x00007f4a2e25d775 in QThreadPrivate::start (arg=0x208f8b0) at thread/qthread_unix.cpp:248
#9  0x00007f4a2b7cb9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#10 0x00007f4a2dc346dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4a306c0800 (LWP 2346)):
[KCrash Handler]
#5  0x0000000000000030 in ?? ()
#6  0x00007f4a2e363bfe in QObject::connect (sender=0x1f2ab10, signal=<value optimized out>, receiver=0x22d0e60, method=0x7f4a1f4f6a4f "1checkChanged()", type=Qt::AutoConnection)
    at kernel/qobject.cpp:2550
#7  0x00007f4a2e36c8ba in QSingleShotTimer (this=0x1f2ab10, msec=0, receiver=0x22d0e60, member=0x7f4a1f4f6a4f "1checkChanged()") at kernel/qtimer.cpp:291
#8  0x00007f4a2e36c962 in QTimer::singleShot (msec=0, receiver=0x22d0e60, member=0x7f4a1f4f6a4f "1checkChanged()") at kernel/qtimer.cpp:343
#9  0x00007f4a1f4ed06e in ?? () from /usr/lib/kde4/kcm_kpk_addrm.so
#10 0x00007f4a1f4ed58c in ?? () from /usr/lib/kde4/kcm_kpk_addrm.so
#11 0x00007f4a2e364dcf in QMetaObject::activate (sender=0x1e01800, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7f4a2e3f8220) at kernel/qobject.cpp:3293
#12 0x00007f4a302a7687 in KCModuleProxy::save (this=<value optimized out>) at ../../kutils/kcmoduleproxy.cpp:279
#13 0x00007f4a30073b33 in ModuleView::moduleSave (this=<value optimized out>, module=0xe) at ../../../systemsettings/core/ModuleView.cpp:302
#14 0x00007f4a30076ed8 in ModuleView::qt_metacall (this=0x1c68800, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffde2cd9a0) at ./ModuleView.moc:95
#15 0x00007f4a2e364dcf in QMetaObject::activate (sender=0x1c6acf0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7f4a2e3f8220) at kernel/qobject.cpp:3293
#16 0x00007f4a2f5df542 in QAbstractButton::clicked (this=0x22d0e60, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#17 0x00007f4a2f2f97db in QAbstractButtonPrivate::emitClicked (this=0x1c6c5b0) at widgets/qabstractbutton.cpp:546
#18 0x00007f4a2f2fa67b in QAbstractButtonPrivate::click (this=0x1c6c5b0) at widgets/qabstractbutton.cpp:539
#19 0x00007f4a2f2fa8ec in QAbstractButton::mouseReleaseEvent (this=0x1c6acf0, e=0x7fffde2ce2f0) at widgets/qabstractbutton.cpp:1121
#20 0x00007f4a2ef9a592 in QWidget::event (this=0x1c6acf0, event=0x7fffde2ce2f0) at kernel/qwidget.cpp:7998
#21 0x00007f4a2ef4422c in QApplicationPrivate::notify_helper (this=0x190bd80, receiver=0x1c6acf0, e=0x7fffde2ce2f0) at kernel/qapplication.cpp:4300
#22 0x00007f4a2ef4aedb in QApplication::notify (this=0x7fffde2ceff0, receiver=0x1c6acf0, e=0x7fffde2ce2f0) at kernel/qapplication.cpp:3865
#23 0x00007f4a2fc4f506 in KApplication::notify (this=0x7fffde2ceff0, receiver=0x1c6acf0, event=0x7fffde2ce2f0) at ../../kdeui/kernel/kapplication.cpp:302
#24 0x00007f4a2e351ffc in QCoreApplication::notifyInternal (this=0x7fffde2ceff0, receiver=0x1c6acf0, event=0x7fffde2ce2f0) at kernel/qcoreapplication.cpp:704
#25 0x00007f4a2ef4a0ae in QCoreApplication::sendEvent (receiver=0x1c6acf0, event=0x7fffde2ce2f0, alienWidget=0x1c6acf0, nativeWidget=0x196e580, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#26 QApplicationPrivate::sendMouseEvent (receiver=0x1c6acf0, event=0x7fffde2ce2f0, alienWidget=0x1c6acf0, nativeWidget=0x196e580, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:2965
#27 0x00007f4a2efc9f75 in QETWidget::translateMouseEvent (this=0x196e580, event=<value optimized out>) at kernel/qapplication_x11.cpp:4368
#28 0x00007f4a2efc88bc in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffde2cec10) at kernel/qapplication_x11.cpp:3501
#29 0x00007f4a2eff4722 in x11EventSourceDispatch (s=0x190f770, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007f4a2ae54972 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x00007f4a2ae587f8 in ?? () from /lib/libglib-2.0.so.0
#32 0x00007f4a2ae589ac in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x00007f4a2e37b4a3 in QEventDispatcherGlib::processEvents (this=0x18e37f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#34 0x00007f4a2eff430e in QGuiEventDispatcherGlib::processEvents (this=0x22d0e60, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x00007f4a2e350922 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#36 0x00007f4a2e350cfc in QEventLoop::exec (this=0x7fffde2cef40, flags=) at kernel/qeventloop.cpp:201
#37 0x00007f4a2e354a3b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#38 0x00000000004110d9 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../systemsettings/app/main.cpp:49

Reported using DrKonqi