Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.32-gentoo-blackhammer x86_64
Distribution: "Gentoo Base System release 2.0.1"

What I was doing when the application crashed:
When i adding and removing some applets (removing lcd weather), the plasma crashed but the kde still working and some seconds after the crash the system still working well.

 -- Backtrace:
Application: Espaço de trabalho do Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 3473)]

Thread 2 (Thread 0x7f3c3cd3d910 (LWP 3475)):
#0  0x00007f3c5cf0f269 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f3c5d17c03b in QWaitCondition::wait (this=<value optimized out>, mutex=0xbd8d48, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f3c5bdafdfc in QHostInfoAgent::run (this=0xbd8d30) at kernel/qhostinfo.cpp:260
#3  0x00007f3c5d17b293 in QThreadPrivate::start (arg=<value optimized out>) at thread/qthread_unix.cpp:188
#4  0x00007f3c5cf0b2d7 in start_thread () from /lib/libpthread.so.0
#5  0x00007f3c59b5138d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f3c5d6e5750 (LWP 3473)):
[KCrash Handler]
#5  0x00007f3c5ac239d4 in QGraphicsItem::isWidget (this=0x30802f0) at graphicsview/qgraphicsitem.cpp:1146
#6  0x00007f3c5ac261c9 in QGraphicsItem::isWindow (this=0x30802f0) at graphicsview/qgraphicsitem.cpp:1159
#7  0x00007f3c5ac562eb in QGraphicsScene::event (this=0x6ec1f0, event=<value optimized out>) at graphicsview/qgraphicsscene.cpp:3850
#8  0x00007f3c5a72088c in QApplicationPrivate::notify_helper (this=0x69ece0, receiver=0x6ec1f0, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4065
#9  0x00007f3c5a726048 in QApplication::notify (this=0x695b90, receiver=0x6ec1f0, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4030
#10 0x00007f3c5b703a66 in KApplication::notify (this=0x695b90, receiver=0x6ec1f0, event=0x7fffe44e6c00) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#11 0x00007f3c5d24bd23 in QCoreApplication::notifyInternal (this=0x695b90, receiver=0x6ec1f0, event=0x7fffe44e6c00) at kernel/qcoreapplication.cpp:606
#12 0x00007f3c5ac68b16 in QGraphicsView::viewportEvent (this=0xe2c890, event=0x7fffe44e6c00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 0x00007f3c5d24b0be in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xe275d0, event=0x7fffe44e6c00) at kernel/qcoreapplication.cpp:726
#14 0x00007f3c5a72085c in QApplicationPrivate::notify_helper (this=0x69ece0, receiver=0xe275d0, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4061
#15 0x00007f3c5a726048 in QApplication::notify (this=0x695b90, receiver=0xe275d0, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4030
#16 0x00007f3c5b703a66 in KApplication::notify (this=0x695b90, receiver=0xe275d0, event=0x7fffe44e6c00) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#17 0x00007f3c5d24bd23 in QCoreApplication::notifyInternal (this=0x695b90, receiver=0xe275d0, event=0x7fffe44e6c00) at kernel/qcoreapplication.cpp:606
#18 0x00007f3c5a76dba0 in QWidget::event (this=<value optimized out>, event=0x7fffe44e6c00) at kernel/qwidget.cpp:7802
#19 0x00007f3c5aa7a086 in QFrame::event (this=0xe2c890, e=0x7fffe44e6c00) at widgets/qframe.cpp:559
#20 0x00007f3c5aafc9d9 in QAbstractScrollArea::event (this=0xe2c890, e=0x7fffe44e6c00) at widgets/qabstractscrollarea.cpp:918
#21 0x00007f3c5a72088c in QApplicationPrivate::notify_helper (this=0x69ece0, receiver=0xe2c890, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4065
#22 0x00007f3c5a726048 in QApplication::notify (this=0x695b90, receiver=0xe2c890, e=0x7fffe44e6c00) at kernel/qapplication.cpp:4030
#23 0x00007f3c5b703a66 in KApplication::notify (this=0x695b90, receiver=0xe2c890, event=0x7fffe44e6c00) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#24 0x00007f3c5d24bd23 in QCoreApplication::notifyInternal (this=0x695b90, receiver=0xe2c890, event=0x7fffe44e6c00) at kernel/qcoreapplication.cpp:606
#25 0x00007f3c5a729b40 in QApplication::setActiveWindow (act=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#26 0x00007f3c5a780d35 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffe44e84e0) at kernel/qapplication_x11.cpp:3471
#27 0x00007f3c5a7a5e54 in x11EventSourceDispatch (s=0x6a22c0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007f3c591b3f6b in IA__g_main_context_dispatch (context=0x6a1520) at gmain.c:1960
#29 0x00007f3c591b7870 in g_main_context_iterate (context=0x6a1520, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2591
#30 0x00007f3c591b79a0 in IA__g_main_context_iteration (context=0x6a1520, may_block=1) at gmain.c:2654
#31 0x00007f3c5d26fa86 in QEventDispatcherGlib::processEvents (this=0x612770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00007f3c5a7a573e in QGuiEventDispatcherGlib::processEvents (this=0x30802f0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f3c5d24a7a2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#34 0x00007f3c5d24a93d in QEventLoop::exec (this=0x7fffe44e8800, flags=) at kernel/qeventloop.cpp:197
#35 0x00007f3c5d24c699 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x00007f3c503da19f in kdemain (argc=<value optimized out>, argv=<value optimized out>)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.4/work/plasma-workspace-4.3.4/plasma/shells/desktop/main.cpp:50
#37 0x0000000000407123 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a53d "0") at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:677
#38 0x0000000000407db0 in handle_launcher_request (sock=8, who=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1169
#39 0x0000000000408249 in handle_requests (waitForPid=0) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1362
#40 0x0000000000408e81 in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.4/work/kdelibs-4.3.4/kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 214595

Reported using DrKonqi