Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.93 (KDE 4.2.93 (KDE 4.3 >= 20090623))
Qt Version: 4.5.1
Operating System: Linux 2.6.30-8-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
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this time the dump looks different , so i reported it again
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 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f603b1a1cce in TaskItemLayout::size (this=<value optimized out>) at /r0/k4/kdesvn/kdebase/workspace/plasma/applets/tasks/taskitemlayout.cpp:152
#6  0x00007f603b1a2072 in TaskItemLayout::gridLayoutSize (this=0x1af9450) at /r0/k4/kdesvn/kdebase/workspace/plasma/applets/tasks/taskitemlayout.cpp:220
#7  0x00007f603b1a210b in TaskItemLayout::layoutItems (this=0x1af9450) at /r0/k4/kdesvn/kdebase/workspace/plasma/applets/tasks/taskitemlayout.cpp:245
#8  0x00007f603b1a9fda in TaskGroupItem::constraintsChanged (this=0x170d4b0, constraints=) at /r0/k4/kdesvn/kdebase/workspace/plasma/applets/tasks/taskgroupitem.cpp:694
#9  0x00007f603b1aec54 in TaskGroupItem::qt_metacall (this=0x170d4b0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffebbef740)
    at /r0/k4/kdesvn/build/kdebase/workspace/plasma/applets/tasks/taskgroupitem.moc:108
#10 0x00007f604b3a0054 in QMetaObject::activate (sender=<value optimized out>, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1647b80)
    at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qobject.cpp:3108
#11 0x00007f603b19cdc2 in Tasks::constraintsChanged (this=0x1af9450, _t1=<value optimized out>) at /r0/k4/kdesvn/build/kdebase/workspace/plasma/applets/tasks/tasks.moc:98
#12 0x00007f603b19d1cf in Tasks::constraintsEvent (this=0x15b00e0, constraints=) at /r0/k4/kdesvn/kdebase/workspace/plasma/applets/tasks/tasks.cpp:169
#13 0x00007f604f696119 in Plasma::Applet::flushPendingConstraintsEvents (this=0x15b00e0) at /r0/k4/kdesvn/kdelibs/plasma/applet.cpp:1160
#14 0x00007f604f6968a5 in Plasma::Applet::timerEvent (this=0x15b00e0, event=<value optimized out>) at /r0/k4/kdesvn/kdelibs/plasma/applet.cpp:2090
#15 0x00007f604b39c8f3 in QObject::event (this=0x15b00e0, e=0x3) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qobject.cpp:1073
#16 0x00007f604c02488b in QGraphicsWidget::event (this=0x15b00e0, event=0x7fffebbeffb0) at /r0/k4/kdesvn/qt-copy/src/gui/graphicsview/qgraphicswidget.cpp:1340
#17 0x00007f604ba9d9ec in QApplicationPrivate::notify_helper (this=0x9e8b60, receiver=0x15b00e0, e=0x7fffebbeffb0) at /r0/k4/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4057
#18 0x00007f604baa3288 in QApplication::notify (this=0x9cf8d0, receiver=0x15b00e0, e=0x7fffebbeffb0) at /r0/k4/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4022
#19 0x00007f604e2c6326 in KApplication::notify (this=0x9cf8d0, receiver=0x15b00e0, event=0x7fffebbeffb0) at /r0/k4/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:302
#20 0x00007f604b38e68c in QCoreApplication::notifyInternal (this=0x9cf8d0, receiver=0x15b00e0, event=0x7fffebbeffb0) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:606
#21 0x00007f604b3b5822 in QTimerInfoList::activateTimers (this=0x9ec330) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:213
#22 0x00007f604b3b32cd in timerSourceDispatch (source=<value optimized out>) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:164
#23 0x00007f60479498fe in IA__g_main_context_dispatch (context=0x9eb120) at /build/buildd/glib2.0-2.21.2/glib/gmain.c:1814
#24 0x00007f604794cfd8 in g_main_context_iterate (context=0x9eb120, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>)
    at /build/buildd/glib2.0-2.21.2/glib/gmain.c:2445
#25 0x00007f604794d100 in IA__g_main_context_iteration (context=0x9eb120, may_block=1) at /build/buildd/glib2.0-2.21.2/glib/gmain.c:2508
#26 0x00007f604b3b3216 in QEventDispatcherGlib::processEvents (this=0x9b6fd0, flags=<value optimized out>) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:324
#27 0x00007f604bb2344e in QGuiEventDispatcherGlib::processEvents (this=0x1af9450, flags=<value optimized out>) at /r0/k4/kdesvn/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:202
#28 0x00007f604b38d0b2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#29 0x00007f604b38d245 in QEventLoop::exec (this=0x7fffebbf0250, flags=) at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#30 0x00007f604b38f059 in QCoreApplication::exec () at /r0/k4/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:888
#31 0x00007f604fc4730f in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /r0/k4/kdesvn/kdebase/workspace/plasma/shells/desktop/main.cpp:50
#32 0x00007f604a5335e6 in __libc_start_main () from /lib/libc.so.6
#33 0x0000000000400829 in _start () at ../sysdeps/x86_64/elf/start.S:113

Reported using DrKonqi