Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
tried to drag home folder to desktop...as lancelot object
played around with the lancelot, dragged it..
a new lancelot opened..the the message came that plasma crashed

 -- Backtrace:
Application: Plasma-Arbeitsfläche (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77d6700 (LWP 1565))]

Thread 2 (Thread 0xac62ab70 (LWP 1566)):
#0  0x003ec422 in __kernel_vsyscall ()
#1  0x00371e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0703d87d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0015fe67 in QWaitConditionPrivate::wait (this=0x850aab0, mutex=0x850aaac, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x850aab0, mutex=0x850aaac, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x02a2b922 in QHostInfoAgent::run (this=0x850aaa0) at kernel/qhostinfo.cpp:260
#6  0x0015ee32 in QThreadPrivate::start (arg=0x850aaa0) at thread/qthread_unix.cpp:188
#7  0x0036d80e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x070308de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77d6700 (LWP 1565)):
[KCrash Handler]
#6  QList<Lancelot::Widget*>::contains (this=0x96043e0, widget=0x965dfa0) at /usr/include/qt4/QtCore/qlist.h:664
#7  Lancelot::Instance::addWidget (this=0x96043e0, widget=0x965dfa0) at ../../../../../applets/lancelot/libs/lancelot/Global.cpp:410
#8  0x0239e219 in Widget (this=0x965dfa0, parent=0x0) at ../../../../../applets/lancelot/libs/lancelot/widgets/Widget.cpp:52
#9  0x023ad919 in ScrollPane (this=0x965dfa0, parent=0x0) at ../../../../../applets/lancelot/libs/lancelot/widgets/ScrollPane.cpp:89
#10 0x023bb836 in CustomListView (this=0x965dfa0, parent=0x0) at ../../../../../applets/lancelot/libs/lancelot/widgets/CustomListView.cpp:325
#11 0x023b1d4c in ActionListView (this=0x965dfa0, parent=0x0) at ../../../../../applets/lancelot/libs/lancelot/widgets/ActionListView.cpp:617
#12 0x023bcf56 in Private (this=0x9700410, parent=0xbfb657f0) at ../../../../../applets/lancelot/libs/lancelot/widgets/PopupList.cpp:43
#13 0x023bd288 in PopupList (this=0xbfb657f0, parent=0x0, f=...) at ../../../../../applets/lancelot/libs/lancelot/widgets/PopupList.cpp:112
#14 0x023bdc25 in PopupMenu (this=0xbfb657f0, parent=0x0, f=...) at ../../../../../applets/lancelot/libs/lancelot/widgets/PopupMenu.cpp:98
#15 0x023af442 in Lancelot::ActionListViewItemFactory::itemContext (this=0x94a98c0, sender=0x9309880, mouseCoordinate=true)
    at ../../../../../applets/lancelot/libs/lancelot/widgets/ActionListView.cpp:468
#16 0x023af6c0 in Lancelot::ActionListViewItem::contextMenuEvent (this=0x9309880, event=0xbfb65dfc) at ../../../../../applets/lancelot/libs/lancelot/widgets/ActionListView.cpp:94
#17 0x016a4890 in QGraphicsItem::sceneEvent (this=0x9309888, event=0xbfb65dfc) at graphicsview/qgraphicsitem.cpp:5000
#18 0x016f19ef in QGraphicsWidget::sceneEvent (this=0x9309880, event=0xbfb65dfc) at graphicsview/qgraphicswidget.cpp:1110
#19 0x016c6e14 in QGraphicsScenePrivate::sendEvent (this=0x850ed30, item=0x9309888, event=0xbfb65dfc) at graphicsview/qgraphicsscene.cpp:1159
#20 0x016d3fc8 in QGraphicsScene::contextMenuEvent (this=0x84aa250, contextMenuEvent=0xbfb65dfc) at graphicsview/qgraphicsscene.cpp:3956
#21 0x016d4f47 in QGraphicsScene::event (this=0x84aa250, event=0xbfb65dfc) at graphicsview/qgraphicsscene.cpp:3766
#22 0x01098f54 in QApplicationPrivate::notify_helper (this=0x840c128, receiver=0x84aa250, e=0xbfb65dfc) at kernel/qapplication.cpp:4056
#23 0x010a067c in QApplication::notify (this=0x83e52d8, receiver=0x84aa250, e=0xbfb65dfc) at kernel/qapplication.cpp:3603
#24 0x00ad0bfa in KApplication::notify (this=0x83e52d8, receiver=0x84aa250, event=0xbfb65dfc) at ../../kdeui/kernel/kapplication.cpp:302
#25 0x0024f6cb in QCoreApplication::notifyInternal (this=0x83e52d8, receiver=0x84aa250, event=0xbfb65dfc) at kernel/qcoreapplication.cpp:610
#26 0x016e1660 in QCoreApplication::sendEvent (this=0x88473a8, event=0xbfb663f8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#27 QGraphicsView::contextMenuEvent (this=0x88473a8, event=0xbfb663f8) at graphicsview/qgraphicsview.cpp:2945
#28 0x010ee69f in QWidget::event (this=0x88473a8, event=0xbfb663f8) at kernel/qwidget.cpp:7708
#29 0x0149d633 in QFrame::event (this=0x88473a8, e=0xbfb663f8) at widgets/qframe.cpp:559
#30 0x0153c494 in QAbstractScrollArea::viewportEvent (this=0x23dbff4, e=0x18) at widgets/qabstractscrollarea.cpp:962
#31 0x016e651f in QGraphicsView::viewportEvent (this=0x88473a8, event=0xbfb663f8) at graphicsview/qgraphicsview.cpp:2919
#32 0x0153ea95 in QAbstractScrollAreaPrivate::viewportEvent (this=0x88486d0, o=0x88487a8, e=0xbfb663f8) at widgets/qabstractscrollarea_p.h:100
#33 QAbstractScrollAreaFilter::eventFilter (this=0x88486d0, o=0x88487a8, e=0xbfb663f8) at widgets/qabstractscrollarea_p.h:111
#34 0x0024e83a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x840c128, receiver=0x88487a8, event=0xbfb663f8) at kernel/qcoreapplication.cpp:726
#35 0x01098f2c in QApplicationPrivate::notify_helper (this=0x840c128, receiver=0x88487a8, e=0xbfb663f8) at kernel/qapplication.cpp:4052
#36 0x010a0ae3 in QApplication::notify (this=0x83e52d8, receiver=0x88487a8, e=0xbfb663f8) at kernel/qapplication.cpp:3845
#37 0x00ad0bfa in KApplication::notify (this=0x83e52d8, receiver=0x88487a8, event=0xbfb663f8) at ../../kdeui/kernel/kapplication.cpp:302
#38 0x0024f6cb in QCoreApplication::notifyInternal (this=0x83e52d8, receiver=0x88487a8, event=0xbfb663f8) at kernel/qcoreapplication.cpp:610
#39 0x0111466e in QCoreApplication::sendSpontaneousEvent (receiver=0x88487a8, event=0x965dfa0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#40 0x0110ee64 in QETWidget::translateMouseEvent (this=0x88473a8, event=0xbfb67a1c) at kernel/qapplication_x11.cpp:4415
#41 0x0110dc4b in QApplication::x11ProcessEvent (this=0x83e52d8, event=0xbfb67a1c) at kernel/qapplication_x11.cpp:3428
#42 0x0113a502 in x11EventSourceDispatch (s=0x840ed68, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#43 0x0194ee88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x01952730 in ?? () from /lib/libglib-2.0.so.0
#45 0x01952863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x0027a02c in QEventDispatcherGlib::processEvents (this=0x840bf18, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#47 0x01139be5 in QGuiEventDispatcherGlib::processEvents (this=0x840bf18, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#48 0x0024dc79 in QEventLoop::processEvents (this=0xbfb67d14, flags=) at kernel/qeventloop.cpp:149
#49 0x0024e0ca in QEventLoop::exec (this=0xbfb67d14, flags=...) at kernel/qeventloop.cpp:201
#50 0x0025053f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#51 0x01098dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#52 0x078a780d in kdemain (argc=1, argv=0x83961e8) at ../../../../plasma/shells/desktop/main.cpp:50
#53 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x83d1338 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#54 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#55 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#56 0x0804fbaf in main (argc=2, argv=0xbfb68574, envp=0xbfb68580) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi