Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.4 x86_64
Distribution: Debian GNU/Linux 4.3 (n/a)

What I was doing when the application crashed:
Switched desktops via ctrl-alt-arrows several times quickly; plasma crashed. Very first run of KDE 3.4.0.

Packages from Debian unstable, architecture amd64.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2d40b2c760 (LWP 26668))]

Thread 2 (Thread 0x7f2d21fcf950 (LWP 27033)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f2d406793e9 in QWaitConditionPrivate::wait (this=0x705170, mutex=0x705168, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=0x705170, mutex=0x705168, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f2d3ca79fc4 in QHostInfoAgent::run (this=0x705150) at kernel/qhostinfo.cpp:260
#4  0x00007f2d406783f5 in QThreadPrivate::start (arg=0x705150) at thread/qthread_unix.cpp:188
#5  0x00007f2d3d3bbf9a in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f2d3df8256d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2d40b2c760 (LWP 26668)):
[KCrash Handler]
#5  0x00007f2d3ec7d314 in QGraphicsItem::isWidget (this=0xe8b3d0) at graphicsview/qgraphicsitem.cpp:1142
#6  0x00007f2d3ec7fa39 in QGraphicsItem::isWindow (this=0xe8b3d0) at graphicsview/qgraphicsitem.cpp:1156
#7  0x00007f2d3ecb5dd9 in QGraphicsScene::event (this=0x842db0, event=0x7fffe25d5e10) at graphicsview/qgraphicsscene.cpp:3850
#8  0x00007f2d3e6ec7ad in QApplicationPrivate::notify_helper (this=0x6a9390, receiver=0x842db0, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4056
#9  0x00007f2d3e6f480a in QApplication::notify (this=0x6a0230, receiver=0x842db0, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4021
#10 0x00007f2d3f345b2b in KApplication::notify (this=0x6a0230, receiver=0x842db0, event=0x7fffe25d6e90) at ../../kdeui/kernel/kapplication.cpp:302
#11 0x00007f2d4075e49c in QCoreApplication::notifyInternal (this=0x6a0230, receiver=0x842db0, event=0x7fffe25d6e90) at kernel/qcoreapplication.cpp:610
#12 0x00007f2d3ecc6266 in QCoreApplication::sendEvent (this=0x11ae460, event=0x7fffe25d6e90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 QGraphicsView::viewportEvent (this=0x11ae460, event=0x7fffe25d6e90) at graphicsview/qgraphicsview.cpp:2880
#14 0x00007f2d4075d7b8 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xb8b750, event=0x7fffe25d6e90) at kernel/qcoreapplication.cpp:726
#15 0x00007f2d3e6ec77c in QApplicationPrivate::notify_helper (this=0x6a9390, receiver=0xb8b750, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4052
#16 0x00007f2d3e6f480a in QApplication::notify (this=0x6a0230, receiver=0xb8b750, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4021
#17 0x00007f2d3f345b2b in KApplication::notify (this=0x6a0230, receiver=0xb8b750, event=0x7fffe25d6e90) at ../../kdeui/kernel/kapplication.cpp:302
#18 0x00007f2d4075e49c in QCoreApplication::notifyInternal (this=0x6a0230, receiver=0xb8b750, event=0x7fffe25d6e90) at kernel/qcoreapplication.cpp:610
#19 0x00007f2d3e73cc5a in QCoreApplication::sendEvent (this=0x11ae460, event=0x7fffe25d6e90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 QWidget::event (this=0x11ae460, event=0x7fffe25d6e90) at kernel/qwidget.cpp:7797
#21 0x00007f2d3eaa5c7b in QFrame::event (this=0x11ae460, e=0x7fffe25d6e90) at widgets/qframe.cpp:559
#22 0x00007f2d3eb35a89 in QAbstractScrollArea::event (this=0x11ae460, e=0x7fffe25d6e90) at widgets/qabstractscrollarea.cpp:918
#23 0x00007f2d3e6ec7ad in QApplicationPrivate::notify_helper (this=0x6a9390, receiver=0x11ae460, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4056
#24 0x00007f2d3e6f480a in QApplication::notify (this=0x6a0230, receiver=0x11ae460, e=0x7fffe25d6e90) at kernel/qapplication.cpp:4021
#25 0x00007f2d3f345b2b in KApplication::notify (this=0x6a0230, receiver=0x11ae460, event=0x7fffe25d6e90) at ../../kdeui/kernel/kapplication.cpp:302
#26 0x00007f2d4075e49c in QCoreApplication::notifyInternal (this=0x6a0230, receiver=0x11ae460, event=0x7fffe25d6e90) at kernel/qcoreapplication.cpp:610
#27 0x00007f2d3e6f3385 in QCoreApplication::sendSpontaneousEvent (act=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#28 QApplication::setActiveWindow (act=<value optimized out>) at kernel/qapplication.cpp:2414
#29 0x00007f2d3e75be61 in QApplication::x11ProcessEvent (this=0x6a0230, event=0x7fffe25d87a0) at kernel/qapplication_x11.cpp:3469
#30 0x00007f2d3e783e3c in x11EventSourceDispatch (s=0x6ac9a0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#31 0x00007f2d3d6097aa in g_main_dispatch (context=0x6ab920) at /tmp/buildd/glib2.0-2.20.4/glib/gmain.c:1824
#32 IA__g_main_context_dispatch (context=0x6ab920) at /tmp/buildd/glib2.0-2.20.4/glib/gmain.c:2377
#33 0x00007f2d3d60cdf8 in g_main_context_iterate (context=0x6ab920, block=1, dispatch=1, self=<value optimized out>) at /tmp/buildd/glib2.0-2.20.4/glib/gmain.c:2455
#34 0x00007f2d3d60cfac in IA__g_main_context_iteration (context=0x6ab920, may_block=1) at /tmp/buildd/glib2.0-2.20.4/glib/gmain.c:2518
#35 0x00007f2d40786b7f in QEventDispatcherGlib::processEvents (this=0x6a8ec0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#36 0x00007f2d3e7835ef in QGuiEventDispatcherGlib::processEvents (this=0xe8b3d0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x00007f2d4075cd62 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#38 0x00007f2d4075d134 in QEventLoop::exec (this=0x7fffe25d8ad0, flags=...) at kernel/qeventloop.cpp:201
#39 0x00007f2d4075f3a4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#40 0x00007f2d357181bb in kdemain (argc=1, argv=0x659060) at ../../../../plasma/shells/desktop/main.cpp:50
#41 0x0000000000407264 in launch (argc=1, _name=0x6610a8 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x6610c8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a0ff "0") at ../../kinit/kinit.cpp:676
#42 0x0000000000407a28 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1168
#43 0x0000000000407fae in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1361
#44 0x000000000040863b in main (argc=2, argv=0x7fffe25d9948, envp=0x7fffe25d9960) at ../../kinit/kinit.cpp:1788

This bug may be a duplicate of or related to bug 201656

Reported using DrKonqi