Version:           4.2 (using KDE 4.2.0)
OS:                Linux
Installed from:    Ubuntu Packages

Right after startup, I clicked left on my desktop, then I got screen blacked (for seconds) and this bug report. I'm using kubuntu-desktop package with KDE 4.2 as explained here <http://www.kubuntu.org/news/kde-4.2>.

Here is the report:

Application: Plasma Workspace (plasma), signal SIGSEGV
[Current thread is 0 (LWP 6538)]

Thread 8 (Thread 0xa9133b90 (LWP 6545)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb57eb3a2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63b4c14 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xa99cb67f in ?? () from /usr/lib/libxine.so.1

Thread 7 (Thread 0xa88c2b90 (LWP 6546)):
#0  0xb562fd88 in ?? () from /usr/lib/libglib-2.0.so.0
#1  0xb562ff61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#2  0xb66b8497 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#3  0xb668c52a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#4  0xb668c6ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#5  0xb659a419 in QThread::exec () from /usr/lib/libQtCore.so.4
#6  0xa9a1b512 in ?? () from /usr/lib/kde4/plugins/phonon_backend/phonon_xine.so
#7  0xb659d6ae in ?? () from /usr/lib/libQtCore.so.4
#8  0xb57e750f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#9  0xb63a6a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 6 (Thread 0xa80c1b90 (LWP 6549)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb639c167 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xa8926f9b in ?? () from /usr/lib/xine/plugins/1.24/xineplug_ao_out_alsa.so
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 5 (Thread 0xa787eb90 (LWP 6550)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb57eb075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63b4bbd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xa99dd843 in ?? () from /usr/lib/libxine.so.1
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 4 (Thread 0xa704ab90 (LWP 6551)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb639edf1 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0xb666d150 in ?? () from /usr/lib/libQtCore.so.4
#3  0xb659d6ae in ?? () from /usr/lib/libQtCore.so.4
#4  0xb57e750f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb63a6a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xa6849b90 (LWP 6557)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb57eb075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63b4bbd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb659e6f2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xa9d0ec8a in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#5  0xb659d6ae in ?? () from /usr/lib/libQtCore.so.4
#6  0xb57e750f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb63a6a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa511eb90 (LWP 6576)):
#0  0xb7f3a430 in __kernel_vsyscall ()
#1  0xb57eb075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63b4bbd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb659e6f2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xb78f7532 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0xb659d6ae in ?? () from /usr/lib/libQtCore.so.4
#6  0xb57e750f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb63a6a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb53646c0 (LWP 6538)):
[KCrash Handler]
#6  0xb7a98726 in KFileItemDelegate::Private::labelRectangle () from /usr/lib/libkio.so.5
#7  0xb7a9bca6 in KFileItemDelegate::Private::layoutTextItems () from /usr/lib/libkio.so.5
#8  0xb7a9cbc9 in KFileItemDelegate::shape () from /usr/lib/libkio.so.5
#9  0xb7a9d22b in KFileItemDelegate::qt_metacall () from /usr/lib/libkio.so.5
#10 0xb6696a7a in QMetaObject::invokeMethod () from /usr/lib/libQtCore.so.4
#11 0xa9de2c21 in ?? () from /usr/lib/kde4/plasma_applet_folderview.so
#12 0xa9de2f34 in ?? () from /usr/lib/kde4/plasma_applet_folderview.so
#13 0xa9ddf64d in ?? () from /usr/lib/kde4/plasma_applet_folderview.so
#14 0xb6e9a04c in QGraphicsItem::sceneEvent () from /usr/lib/libQtGui.so.4
#15 0xb6edd7af in QGraphicsWidget::sceneEvent () from /usr/lib/libQtGui.so.4
#16 0xb6eb854c in ?? () from /usr/lib/libQtGui.so.4
#17 0xb6eb9a2a in ?? () from /usr/lib/libQtGui.so.4
#18 0xb6ec12d1 in ?? () from /usr/lib/libQtGui.so.4
#19 0xb6ec15af in QGraphicsScene::mouseMoveEvent () from /usr/lib/libQtGui.so.4
#20 0xb6ec17c7 in QGraphicsScene::event () from /usr/lib/libQtGui.so.4
#21 0xb691d8ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#22 0xb692572e in QApplication::notify () from /usr/lib/libQtGui.so.4
#23 0xb7681fed in KApplication::notify () from /usr/lib/libkdeui.so.5
#24 0xb668de61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#25 0xb6eced88 in ?? () from /usr/lib/libQtGui.so.4
#26 0xb6ed7316 in QGraphicsView::mouseMoveEvent () from /usr/lib/libQtGui.so.4
#27 0xb69757cb in QWidget::event () from /usr/lib/libQtGui.so.4
#28 0xb6cacfd3 in QFrame::event () from /usr/lib/libQtGui.so.4
#29 0xb6d437df in QAbstractScrollArea::viewportEvent () from /usr/lib/libQtGui.so.4
#30 0xb6ed0d0f in QGraphicsView::viewportEvent () from /usr/lib/libQtGui.so.4
#31 0xb6d45d85 in ?? () from /usr/lib/libQtGui.so.4
#32 0xb668d04a in QCoreApplicationPrivate::sendThroughObjectEventFilters () from /usr/lib/libQtCore.so.4
#33 0xb691d8ca in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#34 0xb69260e1 in QApplication::notify () from /usr/lib/libQtGui.so.4
#35 0xb7681fed in KApplication::notify () from /usr/lib/libkdeui.so.5
#36 0xb668de61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#37 0xb692536e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#38 0xb698f656 in ?? () from /usr/lib/libQtGui.so.4
#39 0xb698e9e5 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#40 0xb69b87aa in ?? () from /usr/lib/libQtGui.so.4
#41 0xb562c6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#42 0xb562fda3 in ?? () from /usr/lib/libglib-2.0.so.0
#43 0xb562ff61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#44 0xb66b8478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#45 0xb69b7ea5 in ?? () from /usr/lib/libQtGui.so.4
#46 0xb668c52a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#47 0xb668c6ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#48 0xb668eda5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#49 0xb691d767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#50 0xb7ec5456 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#51 0x08048712 in _start ()