Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-11-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Zoomed out to activity view with keyboard short cut. Clicked magnifier symbol to change back to desktop. Plasma crashed with backtrace.
Can not reproduce crash after plasma restart.

 -- Backtrace:
Application: Plasma Workspace (kdeinit), signal: Segmentation fault
[Current thread is 0 (LWP 6195)]

Thread 2 (Thread 0x7fb6c2b70950 (LWP 6198)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fb6e2264939 in QWaitCondition::wait (this=0x20fb380, mutex=0x20fb378, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fb6e10e14cc in QHostInfoAgent::run (this=0x20fb360) at kernel/qhostinfo.cpp:260
#3  0x00007fb6e2263952 in QThreadPrivate::start (arg=0x20fb360) at thread/qthread_unix.cpp:189
#4  0x00007fb6de0e53ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fb6decc9fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb6e282c750 (LWP 6195)):
[KCrash Handler]
#5  0x00007fb6d6f2d459 in PlasmaApp::setControllerVisible (this=0x1880fd0, show=false) at /build/buildd/kdebase-workspace-4.2.90/plasma/shells/desktop/plasmaapp.cpp:912
#6  0x00007fb6d6f2e09d in PlasmaApp::zoomIn (this=0x1880fd0, containment=0x1e8b210) at /build/buildd/kdebase-workspace-4.2.90/plasma/shells/desktop/plasmaapp.cpp:823
#7  0x00007fb6d6f2e86d in PlasmaApp::zoom (this=0x1880fd0, containment=0x1e8b210, direction=Plasma::ZoomIn) at /build/buildd/kdebase-workspace-4.2.90/plasma/shells/desktop/plasmaapp.cpp:788
#8  0x00007fb6d6f336ca in PlasmaApp::qt_metacall (this=0x1880fd0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffea85fbf0)
    at /build/buildd/kdebase-workspace-4.2.90/obj-x86_64-linux-gnu/plasma/shells/desktop/plasmaapp.moc:111
#9  0x00007fb6e23621f2 in QMetaObject::activate (sender=0x1e8b210, from_signal_index=<value optimized out>, to_signal_index=37, argv=0x7fffea85fbe8) at kernel/qobject.cpp:3069
#10 0x00007fb6d9c0d910 in Plasma::Containment::zoomRequested (this=0x1e1d00000000, _t1=0x1e8b210, _t2=Plasma::ZoomIn) at /build/buildd/kde4libs-4.2.90/obj-x86_64-linux-gnu/plasma/containment.moc:170
#11 0x00007fb6d9c0df41 in Plasma::ContainmentPrivate::zoomIn (this=0x1ec42b0) at /build/buildd/kde4libs-4.2.90/plasma/containment.cpp:1656
#12 0x00007fb6d9c1a6b4 in Plasma::Containment::qt_metacall (this=0x1e8b210, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffea85fd70)
    at /build/buildd/kde4libs-4.2.90/obj-x86_64-linux-gnu/plasma/containment.moc:141
#13 0x00007fb6c40ac495 in DefaultDesktop::qt_metacall (this=0x1e1d00000000, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffea85fbe8)
    at /build/buildd/kdebase-workspace-4.2.90/obj-x86_64-linux-gnu/plasma/containments/desktop/desktop.moc:78
#14 0x00007fb6e23621f2 in QMetaObject::activate (sender=0x1e0ad80, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x7fffea85fbe8) at kernel/qobject.cpp:3069
#15 0x00007fb6df8d07e7 in QAction::triggered (this=0x1e1d00000000, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#16 0x00007fb6df8d1c60 in QAction::activate (this=0x1e0ad80, event=<value optimized out>) at kernel/qaction.cpp:1160
#17 0x00007fb6df8d4a22 in QAction::qt_metacall (this=0x1e0ad80, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffea85ffd0) at kernel/qaction.h:203
#18 0x00007fb6df930ad5 in QWidgetAction::qt_metacall (this=0x1e1d00000000, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffea85fbe8) at .moc/release-shared/moc_qwidgetaction.cpp:61
#19 0x00007fb6e0947288 in KAction::qt_metacall (this=0x1e1d00000000, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffea85fbe8)
    at /build/buildd/kde4libs-4.2.90/obj-x86_64-linux-gnu/kdeui/kaction.moc:85
#20 0x00007fb6e23621f2 in QMetaObject::activate (sender=0x1ec0210, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x7fffea85fbe8) at kernel/qobject.cpp:3069
#21 0x00007fb6d9c8c1f0 in Plasma::IconWidget::mouseReleaseEvent (this=0x1ec0210, event=0x7fffea860850) at /build/buildd/kde4libs-4.2.90/plasma/widgets/iconwidget.cpp:1172
#22 0x00007fb6dfea1bcf in QGraphicsItem::sceneEvent (this=0x1ec0220, event=0x0) at graphicsview/qgraphicsitem.cpp:4792
#23 0x00007fb6dfec6ce6 in QGraphicsScenePrivate::sendMouseEvent (this=0x1920860, mouseEvent=0x7fffea860850) at graphicsview/qgraphicsscene.cpp:1221
#24 0x00007fb6dfece791 in QGraphicsScene::mouseReleaseEvent (this=<value optimized out>, mouseEvent=0x7fffea860850) at graphicsview/qgraphicsscene.cpp:4298
#25 0x00007fb6dfeceb30 in QGraphicsScene::event (this=0x199a210, event=0x7fffea860850) at graphicsview/qgraphicsscene.cpp:3661
#26 0x00007fb6df8d678d in QApplicationPrivate::notify_helper (this=0x18c03f0, receiver=0x199a210, e=0x7fffea860850) at kernel/qapplication.cpp:4084
#27 0x00007fb6df8de97a in QApplication::notify (this=0x1880fd0, receiver=0x199a210, e=0x7fffea860850) at kernel/qapplication.cpp:4049
#28 0x00007fb6e0a1906b in KApplication::notify (this=0x1880fd0, receiver=0x199a210, event=0x7fffea860850) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#29 0x00007fb6e234c75c in QCoreApplication::notifyInternal (this=0x1880fd0, receiver=0x199a210, event=0x7fffea860850) at kernel/qcoreapplication.cpp:602
#30 0x00007fb6dfee08fb in QGraphicsView::mouseReleaseEvent (this=0x23364a0, event=0x7fffea8610e0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#31 0x00007fb6df9278cf in QWidget::event (this=0x23364a0, event=0x7fffea8610e0) at kernel/qwidget.cpp:7516
#32 0x00007fb6dfcc140b in QFrame::event (this=0x23364a0, e=0x7fffea8610e0) at widgets/qframe.cpp:559
#33 0x00007fb6dfeddd1b in QGraphicsView::viewportEvent (this=0x23364a0, event=0x7fffea8610e0) at graphicsview/qgraphicsview.cpp:2933
#34 0x00007fb6e234ba68 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x231f9d0, event=0x7fffea8610e0) at kernel/qcoreapplication.cpp:718
#35 0x00007fb6df8d675c in QApplicationPrivate::notify_helper (this=0x18c03f0, receiver=0x231f9d0, e=0x7fffea8610e0) at kernel/qapplication.cpp:4080
#36 0x00007fb6df8df0da in QApplication::notify (this=<value optimized out>, receiver=0x231f9d0, e=0x7fffea8610e0) at kernel/qapplication.cpp:3786
#37 0x00007fb6e0a1906b in KApplication::notify (this=0x1880fd0, receiver=0x231f9d0, event=0x7fffea8610e0) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#38 0x00007fb6e234c75c in QCoreApplication::notifyInternal (this=0x1880fd0, receiver=0x231f9d0, event=0x7fffea8610e0) at kernel/qcoreapplication.cpp:602
#39 0x00007fb6df8de328 in QApplicationPrivate::sendMouseEvent (receiver=0x231f9d0, event=0x7fffea8610e0, alienWidget=0x231f9d0, nativeWidget=0x23364a0, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7fb6e033aeb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#40 0x00007fb6df947e19 in QETWidget::translateMouseEvent (this=0x23364a0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4425
#41 0x00007fb6df946a88 in QApplication::x11ProcessEvent (this=0x1880fd0, event=0x7fffea861c20) at kernel/qapplication_x11.cpp:3543
#42 0x00007fb6df96f464 in x11EventSourceDispatch (s=0x18c3c40, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#43 0x00007fb6de33420a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#44 0x00007fb6de3378e0 in ?? () from /usr/lib/libglib-2.0.so.0
#45 0x00007fb6de337a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#46 0x00007fb6e2375e6f in QEventDispatcherGlib::processEvents (this=0x18c0090, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#47 0x00007fb6df96ebef in QGuiEventDispatcherGlib::processEvents (this=0x1e1d00000000, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#48 0x00007fb6e234b002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -360308976}) at kernel/qeventloop.cpp:149
#49 0x00007fb6e234b3cd in QEventLoop::exec (this=0x7fffea861f50, flags={i = -360308896}) at kernel/qeventloop.cpp:200
#50 0x00007fb6e234d694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#51 0x00007fb6d6f1a7eb in kdemain (argc=1, argv=0x182f7e0) at /build/buildd/kdebase-workspace-4.2.90/plasma/shells/desktop/main.cpp:50
#52 0x000000000040714e in launch (argc=1, _name=0x1874488 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x18744a8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a308 "0") at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:671
#53 0x0000000000407978 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1163
#54 0x0000000000407f25 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1356
#55 0x0000000000408a66 in main (argc=2, argv=0x7fffea862de8, envp=0x7fffea862e00) at /build/buildd/kde4libs-4.2.90/kinit/kinit.cpp:1783

This bug may be a duplicate of or related to bug 195739

Reported using DrKonqi