Version:            (using Devel)
OS:                Linux
Installed from:    Compiled sources

This backtrace appears to be of no use.
This is probably because your packages are built in a way which prevents creation of proper backtraces, or the stack frame was seriously corrupted in the crash.

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[Thread debugging using libthread_db enabled]
[New Thread 0xb4fc1700 (LWP 8738)]
[New Thread 0xb161ab90 (LWP 8801)]
[New Thread 0xb1e1bb90 (LWP 8800)]
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0xb805f430 in __kernel_vsyscall ()
[Current thread is 0 (LWP 8738)]

Thread 3 (Thread 0xb1e1bb90 (LWP 8800)):
#0  0xb805f430 in __kernel_vsyscall ()
#1  0xb61fd412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6364344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb2c7aae3 in ?? () from /usr/lib/libxine.so.1

Thread 2 (Thread 0xb161ab90 (LWP 8801)):
#0  0xb54dd0ac in clock_gettime () from /lib/tls/i686/cmov/librt.so.1
#1  0xb667006b in ?? () from /usr/lib/libQtCore.so.4
#2  0xb6670241 in ?? () from /usr/lib/libQtCore.so.4
#3  0xb6671e2c in ?? () from /usr/lib/libQtCore.so.4
#4  0xb666e61a in ?? () from /usr/lib/libQtCore.so.4
#5  0xb55799c0 in IA__g_main_context_prepare (context=0x8f01a68, priority=0xb161a1e8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2134
#6  0xb5579dda in g_main_context_iterate (context=0x8f01a68, block=1, dispatch=1, self=0x8f15f80) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2428
#7  0xb557a268 in IA__g_main_context_iteration (context=0x8f01a68, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#8  0xb666e457 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#9  0xb664106a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#10 0xb66414aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#11 0xb654b639 in QThread::exec () from /usr/lib/libQtCore.so.4
#12 0xb2cc820a in ?? () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#13 0xb654e96e in ?? () from /usr/lib/libQtCore.so.4
#14 0xb61f94ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#15 0xb635549e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4fc1700 (LWP 8738)):
#0  0xb805f430 in __kernel_vsyscall ()
#1  0xb63107a6 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2  0xb63105be in sleep () from /lib/tls/i686/cmov/libc.so.6
#3  0xb77a88b2 in ?? () from /usr/lib/libkdeui.so.5
#4  0xb77a9274 in KCrash::defaultCrashHandler () from /usr/lib/libkdeui.so.5
#5  <signal handler called>
#6  0xb711713f in ?? () from /usr/lib/libQtGui.so.4
#7  0xb7117a93 in QSortFilterProxyModel::mapToSource () from /usr/lib/libQtGui.so.4
#8  0xb71173d2 in QSortFilterProxyModel::data () from /usr/lib/libQtGui.so.4
#9  0x08157596 in ?? ()
#10 0xb70d1026 in QTreeView::sizeHintForColumn () from /usr/lib/libQtGui.so.4
#11 0xb7099c12 in ?? () from /usr/lib/libQtGui.so.4
#12 0xb70a11a3 in ?? () from /usr/lib/libQtGui.so.4
#13 0xb70a17c7 in QHeaderView::resizeSections () from /usr/lib/libQtGui.so.4
#14 0xb70a22df in QHeaderView::viewportEvent () from /usr/lib/libQtGui.so.4
#15 0xb6fe7f55 in ?? () from /usr/lib/libQtGui.so.4
#16 0xb6641c5a in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#17 0xb6b14e7a in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#18 0xb6b1d282 in QApplication::notify () from /usr/lib/libQtGui.so.4
#19 0xb773894d in KApplication::notify () from /usr/lib/libkdeui.so.5
#20 0xb6642a3b in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#21 0xb6b69dc6 in QWidgetPrivate::hideChildren () from /usr/lib/libQtGui.so.4
#22 0xb6b69d00 in QWidgetPrivate::hideChildren () from /usr/lib/libQtGui.so.4
#23 0xb6b69d00 in QWidgetPrivate::hideChildren () from /usr/lib/libQtGui.so.4
#24 0xb6b69d00 in QWidgetPrivate::hideChildren () from /usr/lib/libQtGui.so.4
#25 0xb6b69f08 in QWidgetPrivate::hide_helper () from /usr/lib/libQtGui.so.4
#26 0xb6b71920 in QWidget::setVisible () from /usr/lib/libQtGui.so.4
#27 0xb6b6689d in QWidget::~QWidget () from /usr/lib/libQtGui.so.4
#28 0xb6f62531 in QMainWindow::~QMainWindow () from /usr/lib/libQtGui.so.4
#29 0xb781d13b in KMainWindow::~KMainWindow () from /usr/lib/libkdeui.so.5
#30 0xb7860267 in KXmlGuiWindow::~KXmlGuiWindow () from /usr/lib/libkdeui.so.5
#31 0x080ecb54 in _start ()
#0  0xb805f430 in __kernel_vsyscall ()