Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.00 (4.6.0) "release 6"
Qt Version: 4.7.1
Operating System: Linux 2.6.37.1-1.2-desktop x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
Have been getting a lot of the following warning messages in kdm.log 
Warning: Xalloc: requesting unpleasantly large amount of memory: 0 bytes.
Desktop appears frozen; however, if I switch between workspaces each workspace will refresh with the last requested action before "freezing" again.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f9782bb5760 (LWP 3339))]

Thread 3 (Thread 0x7f9760781700 (LWP 3343)):
#0  0x00007f97814fc0a4 in pthread_mutex_lock () from /lib64/libpthread.so.0
#1  0x00007f977d11b61d in g_main_context_acquire () from /lib64/libglib-2.0.so.0
#2  0x00007f977d11cf25 in ?? () from /lib64/libglib-2.0.so.0
#3  0x00007f977d11d650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f978189c976 in QEventDispatcherGlib::processEvents (this=0x7f97580008b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f9781871052 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f9781871265 in QEventLoop::exec (this=0x7f9760780de0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f97817861e4 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#8  0x00007f9781852968 in QInotifyFileSystemWatcherEngine::run (this=0xccacc0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f9781788a5e in QThreadPrivate::start (arg=0xccacc0) at thread/qthread_unix.cpp:285
#10 0x00007f97814f9a3f in start_thread () from /lib64/libpthread.so.0
#11 0x00007f97802b467d in clone () from /lib64/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f975d8d4700 (LWP 3346)):
#0  0x00007f97814fe38c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9777c32084 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib64/libQtWebKit.so.4
#2  0x00007f97814f9a3f in start_thread () from /lib64/libpthread.so.0
#3  0x00007f97802b467d in clone () from /lib64/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9782bb5760 (LWP 3339)):
[KCrash Handler]
#6  0x00007f9780a633bf in QWidget::testAttribute_helper (this=0x130f0c0, attribute=Qt::WA_Hover) at kernel/qwidget.cpp:10762
#7  0x00007f9780a29b71 in testAttribute (this=<value optimized out>, receiver=0x130f0c0, e=0x7fffaff96200) at ../../src/gui/kernel/qwidget.h:1031
#8  QApplication::notify (this=<value optimized out>, receiver=0x130f0c0, e=0x7fffaff96200) at kernel/qapplication.cpp:4028
#9  0x00007f97825159e6 in KApplication::notify (this=0x69e200, receiver=0x130f0c0, event=0x7fffaff96200) at /usr/src/debug/kdelibs-4.6.0/kdeui/kernel/kapplication.cpp:311
#10 0x00007f9781871bfc in QCoreApplication::notifyInternal (this=0x69e200, receiver=0x130f0c0, event=0x7fffaff96200) at kernel/qcoreapplication.cpp:732
#11 0x00007f9780a21d25 in sendEvent (receiver=0x130f0c0, event=0x7fffaff96200, alienWidget=0x0, nativeWidget=0x130f0c0, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:215
#12 QApplicationPrivate::sendMouseEvent (receiver=0x130f0c0, event=0x7fffaff96200, alienWidget=0x0, nativeWidget=0x130f0c0, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3105
#13 0x00007f9780a9fe08 in QETWidget::translateMouseEvent (this=0x130f0c0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4438
#14 0x00007f9780a9e4c9 in QApplication::x11ProcessEvent (this=0x69e200, event=0x7fffaff96b60) at kernel/qapplication_x11.cpp:3564
#15 0x00007f9780ac60f2 in x11EventSourceDispatch (s=0x6abad0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#16 0x00007f977d11cbd3 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#17 0x00007f977d11d3b0 in ?? () from /lib64/libglib-2.0.so.0
#18 0x00007f977d11d650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#19 0x00007f978189c91f in QEventDispatcherGlib::processEvents (this=0x69ec60, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#20 0x00007f9780ac5d8e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#21 0x00007f9781871052 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#22 0x00007f9781871265 in QEventLoop::exec (this=0x299ce20, flags=...) at kernel/qeventloop.cpp:201
#23 0x00007f9780aad9fe in QDragManager::drag (this=0x17bc5c0, o=<value optimized out>) at kernel/qdnd_x11.cpp:1981
#24 0x00007f9780a330d8 in QDrag::exec (this=0x841520, supportedActions=..., defaultDropAction=Qt::IgnoreAction) at kernel/qdrag.cpp:284
#25 0x00007f9780a33193 in QDrag::exec (this=<value optimized out>, supportedActions=<value optimized out>) at kernel/qdrag.cpp:239
#26 0x00007f976a0a9440 in Kickoff::FlipScrollView::startDrag (this=0xf36cb0, supportedActions=...) at /usr/src/debug/kdebase-workspace-4.6.0/plasma/desktop/applets/kickoff/ui/flipscrollview.cpp:716
#27 0x00007f9780f2f411 in QAbstractItemView::mouseMoveEvent (this=0xf36cb0, event=<value optimized out>) at itemviews/qabstractitemview.cpp:1700
#28 0x00007f976a0a48d4 in Kickoff::FlipScrollView::mouseMoveEvent (this=0xf36cb0, event=0x7fffaff97ff0) at /usr/src/debug/kdebase-workspace-4.6.0/plasma/desktop/applets/kickoff/ui/flipscrollview.cpp:518
#29 0x00007f9780a7256c in QWidget::event (this=0xf36cb0, event=0x7fffaff97ff0) at kernel/qwidget.cpp:8185
#30 0x00007f9780e16906 in QFrame::event (this=0xf36cb0, e=0x7fffaff97ff0) at widgets/qframe.cpp:557
#31 0x00007f9780f26c23 in QAbstractItemView::viewportEvent (this=0xf36cb0, event=0x7fffaff97ff0) at itemviews/qabstractitemview.cpp:1619
#32 0x00007f9781871d87 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xf37b50, event=0x7fffaff97ff0) at kernel/qcoreapplication.cpp:847
#33 0x00007f9780a20ce1 in QApplicationPrivate::notify_helper (this=0x6a8260, receiver=0xf37b50, e=0x7fffaff97ff0) at kernel/qapplication.cpp:4441
#34 0x00007f9780a29aac in QApplication::notify (this=<value optimized out>, receiver=0xf37b50, e=0x7fffaff97ff0) at kernel/qapplication.cpp:4006
#35 0x00007f97825159e6 in KApplication::notify (this=0x69e200, receiver=0xf37b50, event=0x7fffaff97ff0) at /usr/src/debug/kdelibs-4.6.0/kdeui/kernel/kapplication.cpp:311
#36 0x00007f9781871bfc in QCoreApplication::notifyInternal (this=0x69e200, receiver=0xf37b50, event=0x7fffaff97ff0) at kernel/qcoreapplication.cpp:732
#37 0x00007f9780a21d25 in sendEvent (receiver=0xf37b50, event=0x7fffaff97ff0, alienWidget=0xf37b50, nativeWidget=0x1004150, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:215
#38 QApplicationPrivate::sendMouseEvent (receiver=0xf37b50, event=0x7fffaff97ff0, alienWidget=0xf37b50, nativeWidget=0x1004150, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3105
#39 0x00007f9780a22282 in QApplicationPrivate::sendSyntheticEnterLeave (this=<value optimized out>, widget=<value optimized out>) at kernel/qapplication.cpp:3191
#40 0x00007f9780a6dbb3 in QWidgetPrivate::hideChildren (this=<value optimized out>, spontaneous=false) at kernel/qwidget.cpp:7737
#41 0x00007f9780a6db6e in QWidgetPrivate::hideChildren (this=<value optimized out>, spontaneous=false) at kernel/qwidget.cpp:7723
#42 0x00007f9780a6db6e in QWidgetPrivate::hideChildren (this=<value optimized out>, spontaneous=false) at kernel/qwidget.cpp:7723
#43 0x00007f9780a6db6e in QWidgetPrivate::hideChildren (this=<value optimized out>, spontaneous=false) at kernel/qwidget.cpp:7723
#44 0x00007f9780a6dd3d in QWidgetPrivate::hide_helper (this=0xff2c50) at kernel/qwidget.cpp:7467
#45 0x00007f9780a76398 in QWidget::setVisible (this=0x1004150, visible=<value optimized out>) at kernel/qwidget.cpp:7639
#46 0x00007f977860fe60 in Plasma::PopupApplet::qt_metacall (this=0x830ce0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffaff98440) at /usr/src/debug/kdelibs-4.6.0/build/plasma/popupapplet.moc:95
#47 0x00007f976a0bb0b0 in LauncherApplet::qt_metacall (this=0x830ce0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffaff98440) at /usr/src/debug/kdebase-workspace-4.6.0/build/plasma/desktop/applets/kickoff/applet.moc:78
#48 0x00007f9781886def in QMetaObject::activate (sender=0x64a4c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3272
#49 0x00007f976a0ac95c in Kickoff::Launcher::eventFilter (this=0x64a4c0, object=0xf37b50, event=0x7fffaff98c30) at /usr/src/debug/kdebase-workspace-4.6.0/plasma/desktop/applets/kickoff/ui/launcher.cpp:827
#50 0x00007f9781871d87 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xf37b50, event=0x7fffaff98c30) at kernel/qcoreapplication.cpp:847
#51 0x00007f9780a20ce1 in QApplicationPrivate::notify_helper (this=0x6a8260, receiver=0xf37b50, e=0x7fffaff98c30) at kernel/qapplication.cpp:4441
#52 0x00007f9780a29aac in QApplication::notify (this=<value optimized out>, receiver=0xf37b50, e=0x7fffaff98c30) at kernel/qapplication.cpp:4006
#53 0x00007f97825159e6 in KApplication::notify (this=0x69e200, receiver=0xf37b50, event=0x7fffaff98c30) at /usr/src/debug/kdelibs-4.6.0/kdeui/kernel/kapplication.cpp:311
#54 0x00007f9781871bfc in QCoreApplication::notifyInternal (this=0x69e200, receiver=0xf37b50, event=0x7fffaff98c30) at kernel/qcoreapplication.cpp:732
#55 0x00007f9780a21d25 in sendEvent (receiver=0xf37b50, event=0x7fffaff98c30, alienWidget=0xf37b50, nativeWidget=0x1004150, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:215
#56 QApplicationPrivate::sendMouseEvent (receiver=0xf37b50, event=0x7fffaff98c30, alienWidget=0xf37b50, nativeWidget=0x1004150, buttonDown=0x7f97814f0178, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3105
#57 0x00007f9780a9fe08 in QETWidget::translateMouseEvent (this=0x1004150, event=<value optimized out>) at kernel/qapplication_x11.cpp:4438
#58 0x00007f9780a9e4c9 in QApplication::x11ProcessEvent (this=0x69e200, event=0x7fffaff99590) at kernel/qapplication_x11.cpp:3564
#59 0x00007f9780ac60f2 in x11EventSourceDispatch (s=0x6abad0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#60 0x00007f977d11cbd3 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#61 0x00007f977d11d3b0 in ?? () from /lib64/libglib-2.0.so.0
#62 0x00007f977d11d650 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#63 0x00007f978189c91f in QEventDispatcherGlib::processEvents (this=0x69ec60, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#64 0x00007f9780ac5d8e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#65 0x00007f9781871052 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#66 0x00007f9781871265 in QEventLoop::exec (this=0x7fffaff998b0, flags=...) at kernel/qeventloop.cpp:201
#67 0x00007f97818756ab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#68 0x00007f97713e3da8 in kdemain (argc=1, argv=0x67c5e0) at /usr/src/debug/kdebase-workspace-4.6.0/plasma/desktop/shell/main.cpp:118
#69 0x00000000004075e9 in _start ()

Possible duplicates by query: bug 270363, bug 270278, bug 267343, bug 253524, bug 253198.

Reported using DrKonqi