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

KWin crashed during logout after I had logged out from the KDE menu.

Backtrace:

Application: KWin (kwin), signal SIGABRT

Thread 1 (Thread 0xb56716e0 (LWP 8028)):
[KCrash Handler]
#6  0xb7f81430 in __kernel_vsyscall ()
#7  0xb67ef880 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb67f1248 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb759c795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb759c872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb759c8cc in qt_assert_x () from /usr/lib/libQtCore.so.4
#12 0xb7efeb6a in KWin::Workspace::clientArea (this=0x8e517c0, opt=KWin::FullArea, screen=-1, desktop=1) at /usr/include/qt4/QtCore/qvector.h:321
#13 0xb7efedff in KWin::Workspace::clientArea (this=0x8e517c0, opt=KWin::FullArea, p=@0xbff80608, desktop=1) at /build/buildd/kdebase-workspace-4.1.80/kwin/geometry.cpp:279
#14 0xb7f15172 in KWin::Unmanaged::shouldUnredirect (this=0x92f31b0) at /build/buildd/kdebase-workspace-4.1.80/kwin/composite.cpp:911
#15 0xb7f19895 in KWin::Toplevel::updateUnredirectedState (this=0x92f31b0) at /build/buildd/kdebase-workspace-4.1.80/kwin/composite.cpp:833
#16 0xb7f19e2a in KWin::Workspace::delayedCheckUnredirect (this=0x8e517c0) at /build/buildd/kdebase-workspace-4.1.80/kwin/composite.cpp:602
#17 0xb7eb0e66 in KWin::Workspace::qt_metacall (this=0x8e517c0, _c=QMetaObject::InvokeMetaMethod, _id=144, _a=0xbff807d8)
    at /build/buildd/kdebase-workspace-4.1.80/obj-i486-linux-gnu/kwin/workspace.moc:447
#18 0xb76a9a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#19 0xb76aa7e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#20 0xb76e47a7 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#21 0xb76b040e in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#22 0xb76a453f in QObject::event () from /usr/lib/libQtCore.so.4
#23 0xb6d858ec in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#24 0xb6d8d72e in QApplication::notify () from /usr/lib/libQtGui.so.4
#25 0xb7c9cc6d in KApplication::notify (this=0xbff80f64, receiver=0x8e51a50, event=0xbff80c8c) at /build/buildd/kde4libs-4.1.80/kdeui/kernel/kapplication.cpp:307
#26 0xb7ec8bdd in KWin::Application::notify (this=0xbff80f64, o=0x8e51a50, e=0xbff80c8c) at /build/buildd/kdebase-workspace-4.1.80/kwin/main.cpp:371
#27 0xb7694e61 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#28 0xb76c2d81 in ?? () from /usr/lib/libQtCore.so.4
#29 0xb76bf520 in ?? () from /usr/lib/libQtCore.so.4
#30 0xb65eb6f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0xb65eeda3 in ?? () from /usr/lib/libglib-2.0.so.0
#32 0xb65eef61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0xb76bf478 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#34 0xb6e1fea5 in ?? () from /usr/lib/libQtGui.so.4
#35 0xb769352a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#36 0xb76936ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#37 0xb7695da5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#38 0xb6d85767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#39 0xb7eccb8e in kdemain (argc=3, argv=0xbff81134) at /build/buildd/kdebase-workspace-4.1.80/kwin/main.cpp:513
#40 0x08048742 in main (argc=) at /build/buildd/kdebase-workspace-4.1.80/obj-i486-linux-gnu/kwin/kwin_dummy.cpp:3