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: 4.5.1
Operating System: Linux 2.6.30-8-generic i686
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
After playing a bit with some plasmoids(adding and removing), I zoomed out and the zoomed in into the same activity. That's when this crash report appeared

 -- Backtrace:
Application: Plasma Workspace (kdeinit), signal: Segmentation fault
[Current thread is 0 (LWP 4068)]

Thread 2 (Thread 0xacf2cb90 (LWP 4157)):
#0  0x00f28422 in __kernel_vsyscall ()
#1  0x0062c0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00a0755d in __pthread_cond_wait (cond=0x8bccf38, mutex=0x8bccf20) at forward.c:139
#3  0x00160167 in QWaitCondition::wait (this=0x8bcce88, mutex=0x8bcce84, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0x0725923a in QHostInfoAgent::run (this=0x8bcce78) at kernel/qhostinfo.cpp:260
#5  0x0015f0fe in QThreadPrivate::start (arg=0x8bcce78) at thread/qthread_unix.cpp:189
#6  0x006284ff in start_thread (arg=0xacf2cb90) at pthread_create.c:297
#7  0x009f870e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb801b930 (LWP 4068)):
[KCrash Handler]
#6  0x035e75e7 in PlasmaApp::setControllerVisible (this=0x86ed2b8, show=false) at ../../../../plasma/shells/desktop/plasmaapp.cpp:912
#7  0x035e80c8 in PlasmaApp::zoomIn (this=0x86ed2b8, containment=0x8af6330) at ../../../../plasma/shells/desktop/plasmaapp.cpp:823
#8  0x035e812f in PlasmaApp::zoom (this=0x86ed2b8, containment=0x8af6330, direction=Plasma::ZoomIn) at ../../../../plasma/shells/desktop/plasmaapp.cpp:788
#9  0x035ec4cd in PlasmaApp::qt_metacall (this=0x86ed2b8, _c=QMetaObject::InvokeMetaMethod, _id=28, _a=0xbf983e54) at ./plasmaapp.moc:111
#10 0x00267d78 in QMetaObject::activate (sender=0x8af6330, from_signal_index=37, to_signal_index=37, argv=0xbf983e54) at kernel/qobject.cpp:3120
#11 0x00268a12 in QMetaObject::activate (sender=0x8af6330, m=0x6b57e48, local_signal_index=2, argv=0xbf983e54) at kernel/qobject.cpp:3194
#12 0x069ed1d9 in Plasma::Containment::zoomRequested (this=0x8af6330, _t1=0x8af6330, _t2=Plasma::ZoomIn) at ./containment.moc:170
#13 0x069ed710 in Plasma::ContainmentPrivate::zoomIn (this=0x8ad7908) at ../../plasma/containment.cpp:1656
#14 0x069fb04c in Plasma::Containment::qt_metacall (this=0x8af6330, _c=QMetaObject::InvokeMetaMethod, _id=58, _a=0xbf984028) at ./containment.moc:141
#15 0x0856f68a in DefaultDesktop::qt_metacall (this=0x8af6330, _c=QMetaObject::InvokeMetaMethod, _id=58, _a=0xbf984028) at ./desktop.moc:78
#16 0x00267d78 in QMetaObject::activate (sender=0x8af13d0, from_signal_index=5, to_signal_index=6, argv=0xbf984028) at kernel/qobject.cpp:3120
#17 0x00268208 in QMetaObject::activate (sender=0x8af13d0, m=0x1cbdf08, from_local_signal_index=1, to_local_signal_index=2, argv=0xbf984028) at kernel/qobject.cpp:3214
#18 0x0141f531 in QAction::triggered (this=0x8af13d0, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#19 0x01420ab2 in QAction::activate (this=0x8af13d0, event=QAction::Trigger) at kernel/qaction.cpp:1160
#20 0x014238bb in QAction::qt_metacall (this=0x8af13d0, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbf98420c) at kernel/qaction.h:203
#21 0x0148622a in QWidgetAction::qt_metacall (this=0x8af13d0, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbf98420c) at .moc/release-shared/moc_qwidgetaction.cpp:61
#22 0x0101584a in KAction::qt_metacall (this=0x8af13d0, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbf98420c) at ./kaction.moc:85
#23 0x00267d78 in QMetaObject::activate (sender=0x8af00d0, from_signal_index=6, to_signal_index=6, argv=0x0) at kernel/qobject.cpp:3120
#24 0x00268a12 in QMetaObject::activate (sender=0x8af00d0, m=0x6b5af30, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3194
#25 0x06a75d07 in Plasma::IconWidget::clicked (this=0x8af00d0) at ./iconwidget.moc:182
#26 0x06a788d0 in Plasma::IconWidget::mouseReleaseEvent (this=0x8af00d0, event=0xbf98498c) at ../../plasma/widgets/iconwidget.cpp:1172
#27 0x01a679c4 in QGraphicsItem::sceneEvent (this=0x8af00d8, event=0xbf98498c) at graphicsview/qgraphicsitem.cpp:5011
#28 0x01ab4c3f in QGraphicsWidget::sceneEvent (this=0x8af00d0, event=0xbf98498c) at graphicsview/qgraphicswidget.cpp:1110
#29 0x01a89a9c in QGraphicsScenePrivate::sendEvent (this=0x87658c8, item=0x8af00d8, event=0xbf98498c) at graphicsview/qgraphicsscene.cpp:1159
#30 0x01a8b113 in QGraphicsScenePrivate::sendMouseEvent (this=0x87658c8, mouseEvent=0xbf98498c) at graphicsview/qgraphicsscene.cpp:1230
#31 0x01a96244 in QGraphicsScene::mouseReleaseEvent (this=0x87713d8, mouseEvent=0xbf98498c) at graphicsview/qgraphicsscene.cpp:4450
#32 0x01a97f07 in QGraphicsScene::event (this=0x87713d8, event=0xbf98498c) at graphicsview/qgraphicsscene.cpp:3813
#33 0x01425c1c in QApplicationPrivate::notify_helper (this=0x86fff48, receiver=0x87713d8, e=0xbf98498c) at kernel/qapplication.cpp:4057
#34 0x0142d3f4 in QApplication::notify (this=0x86ed2b8, receiver=0x87713d8, e=0xbf98498c) at kernel/qapplication.cpp:4022
#35 0x010fb04a in KApplication::notify (this=0x86ed2b8, receiver=0x87713d8, event=0xbf98498c) at ../../kdeui/kernel/kapplication.cpp:302
#36 0x00251b1b in QCoreApplication::notifyInternal (this=0x86ed2b8, receiver=0x87713d8, event=0xbf98498c) at kernel/qcoreapplication.cpp:610
#37 0x01aaa17e in QGraphicsView::mouseReleaseEvent (this=0x92582c8, event=0xbf984fb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#38 0x0147b5b7 in QWidget::event (this=0x92582c8, event=0xbf984fb0) at kernel/qwidget.cpp:7521
#39 0x0185f743 in QFrame::event (this=0x92582c8, e=0xbf984fb0) at widgets/qframe.cpp:559
#40 0x018ff754 in QAbstractScrollArea::viewportEvent (this=0xbf983e54, e=0x1f81) at widgets/qabstractscrollarea.cpp:962
#41 0x01aa9b7f in QGraphicsView::viewportEvent (this=0x92582c8, event=0xbf984fb0) at graphicsview/qgraphicsview.cpp:2897
#42 0x01901d95 in QAbstractScrollAreaFilter::eventFilter (this=0x924fef0, o=0x9250d90, e=0xbf984fb0) at widgets/qabstractscrollarea_p.h:100
#43 0x00250c6a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x86fff48, receiver=0x9250d90, event=0xbf984fb0) at kernel/qcoreapplication.cpp:726
#44 0x01425bfa in QApplicationPrivate::notify_helper (this=0x86fff48, receiver=0x9250d90, e=0xbf984fb0) at kernel/qapplication.cpp:4053
#45 0x0142dccb in QApplication::notify (this=0x86ed2b8, receiver=0x9250d90, e=0xbf984fb0) at kernel/qapplication.cpp:3759
#46 0x010fb04a in KApplication::notify (this=0x86ed2b8, receiver=0x9250d90, event=0xbf984fb0) at ../../kdeui/kernel/kapplication.cpp:302
#47 0x00251b1b in QCoreApplication::notifyInternal (this=0x86ed2b8, receiver=0x9250d90, event=0xbf984fb0) at kernel/qcoreapplication.cpp:610
#48 0x0142cd4e in QApplicationPrivate::sendMouseEvent (receiver=0x9250d90, event=0xbf984fb0, alienWidget=0x9250d90, nativeWidget=0x92582c8, buttonDown=0x1cd6aa0, lastMouseReceiver=@0x1cd6aa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#49 0x0149c310 in QETWidget::translateMouseEvent (this=0x92582c8, event=0xbf9865fc) at kernel/qapplication_x11.cpp:4448
#50 0x0149b75a in QApplication::x11ProcessEvent (this=0x86ed2b8, event=0xbf9865fc) at kernel/qapplication_x11.cpp:3444
#51 0x014c8292 in x11EventSourceDispatch (s=0x8702b70, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#52 0x00dcfad8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#53 0x00dd3070 in ?? () from /usr/lib/libglib-2.0.so.0
#54 0x00dd31a3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#55 0x0027cf9c in QEventDispatcherGlib::processEvents (this=0x86fd590, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:324
#56 0x014c7975 in QGuiEventDispatcherGlib::processEvents (this=0x86fd590, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#57 0x002500a9 in QEventLoop::processEvents (this=0xbf9868f4, flags=) at kernel/qeventloop.cpp:149
#58 0x002504f2 in QEventLoop::exec (this=0xbf9868f4, flags={i = 0}) at kernel/qeventloop.cpp:200
#59 0x0025287f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#60 0x01425a97 in QApplication::exec () at kernel/qapplication.cpp:3526
#61 0x035cfedd in kdemain (argc=1, argv=0x86c2058) at ../../../../plasma/shells/desktop/main.cpp:50
#62 0x0804dd32 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x86c1e70 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051128 "0") at ../../kinit/kinit.cpp:671
#63 0x0804e935 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1163
#64 0x0804eec3 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1356
#65 0x0804fb0f in main (argc=2, argv=0xbf987144, envp=0xbf987150) at ../../kinit/kinit.cpp:1783

Reported using DrKonqi