Version:           4.2 rc1 (using 4.2.00 (KDE 4.2.0), Debian packages)
Compiler:          cc
OS:                Linux (i686) release 2.6.26-1-686

When I tried to reload "Google calendar" listed under "Akonadi Compatibility Resource" I got the following crash:

Application: Kontact (kontact), signal SIGSEGV
[Current thread is 0 (LWP 24962)]

Thread 2 (Thread 0xae877b90 (LWP 28949)):
#0  0xb7fd9424 in __kernel_vsyscall ()
#1  0xb6c12611 in select () from /lib/i686/cmov/libc.so.6
#2  0xb77aa670 in QProcessManager::run (this=0xa04b8c8) at io/qprocess_unix.cpp:301
#3  0xb76db52e in QThreadPrivate::start (arg=0xa04b8c8) at thread/qthread_unix.cpp:185
#4  0xb54b04e6 in start_thread () from /lib/i686/cmov/libpthread.so.0
#5  0xb6c1a16e in clone () from /lib/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4bbc6d0 (LWP 24962)):
[KCrash Handler]
#6  0xb0c9ee84 in KOrg::IncidenceMonthItem::realStartDate (this=0xc1e3570) at ../../korganizer/views/monthview/monthitem.cpp:326
#7  0xb0c9dfaa in KOrg::MonthItem::startDate (this=0xa4b2) at ../../korganizer/views/monthview/monthitem.cpp:201
#8  0xb0ca150c in KOrg::MonthGraphicsItem::isBeginItem (this=0xaf7ecf8) at ../../korganizer/views/monthview/monthgraphicsitems.cpp:162
#9  0xb0ca1695 in KOrg::MonthGraphicsItem::widgetPath (this=0xaf7ecf8, border=true) at ../../korganizer/views/monthview/monthgraphicsitems.cpp:185
#10 0xb0ca1961 in KOrg::MonthGraphicsItem::shape (this=0xaf7ecf8) at ../../korganizer/views/monthview/monthgraphicsitems.cpp:167
#11 0xb743400c in QGraphicsItem::contains (this=0xaf7ed00, point=@0xbf8f5a80) at graphicsview/qgraphicsitem.cpp:2702
#12 0xb745d5b1 in QGraphicsScene::items (this=0xa7ab900, pos=@0xbf8f5b90) at graphicsview/qgraphicsscene.cpp:1687
#13 0xb745d835 in QGraphicsScene::itemAt (this=0xa7ab900, pos=@0xbf8f5b90) at graphicsview/qgraphicsscene.cpp:1840
#14 0xb0ca42ea in KOrg::MonthScene::mouseMoveEvent (this=0xa7ab900, mouseEvent=0xbf8f6020) at ../../korganizer/views/monthview/monthscene.cpp:483
#15 0xb7460637 in QGraphicsScene::event (this=0xa7ab900, event=0xbf8f6020) at graphicsview/qgraphicsscene.cpp:2960
#16 0xb6ec079c in QApplicationPrivate::notify_helper (this=0xa052988, receiver=0xa7ab900, e=0xbf8f6020) at kernel/qapplication.cpp:3803
#17 0xb6ec861e in QApplication::notify (this=0xbf8f707c, receiver=0xa7ab900, e=0xbf8f6020) at kernel/qapplication.cpp:3393
#18 0xb7ca777d in KApplication::notify (this=0xbf8f707c, receiver=0xa7ab900, event=0xbf8f6020) at ../../kdeui/kernel/kapplication.cpp:307
#19 0xb77cb0e1 in QCoreApplication::notifyInternal (this=0xbf8f707c, receiver=0xa7ab900, event=0xbf8f6020) at kernel/qcoreapplication.cpp:587
#20 0xb746dbe8 in QGraphicsViewPrivate::mouseMoveEventHandler (this=0xb628e58, event=0xbf8f679c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209
#21 0xb7476176 in QGraphicsView::mouseMoveEvent (this=0xa795d60, event=0xbf8f679c) at graphicsview/qgraphicsview.cpp:2748
#22 0xb6f1862b in QWidget::event (this=0xa795d60, event=0xbf8f679c) at kernel/qwidget.cpp:7148
#23 0xb724bd43 in QFrame::event (this=0xa795d60, e=0xbf8f679c) at widgets/qframe.cpp:651
#24 0xb72e246f in QAbstractScrollArea::viewportEvent (this=0xa795d60, e=0xa4b2) at widgets/qabstractscrollarea.cpp:943
#25 0xb746fb6f in QGraphicsView::viewportEvent (this=0xa795d60, event=0xbf8f679c) at graphicsview/qgraphicsview.cpp:2337
#26 0xb72e4a15 in QAbstractScrollAreaFilter::eventFilter (this=0xb583db0, o=0xb0fff10, e=0xbf8f679c) at widgets/qabstractscrollarea_p.h:96
#27 0xb77ca2ca in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0xa052988, receiver=0xb0fff10, event=0xbf8f679c) at kernel/qcoreapplication.cpp:694
#28 0xb6ec077a in QApplicationPrivate::notify_helper (this=0xa052988, receiver=0xb0fff10, e=0xbf8f679c) at kernel/qapplication.cpp:3799
#29 0xb6ec8fd1 in QApplication::notify (this=0xbf8f707c, receiver=0xb0fff10, e=0xbf8f679c) at kernel/qapplication.cpp:3528
#30 0xb7ca777d in KApplication::notify (this=0xbf8f707c, receiver=0xb0fff10, event=0xbf8f679c) at ../../kdeui/kernel/kapplication.cpp:307
#31 0xb77cb0e1 in QCoreApplication::notifyInternal (this=0xbf8f707c, receiver=0xb0fff10, event=0xbf8f679c) at kernel/qcoreapplication.cpp:587
#32 0xb6ec825e in QApplicationPrivate::sendMouseEvent (receiver=0xb0fff10, event=0xbf8f679c, alienWidget=0xb0fff10, nativeWidget=0xa11d2d0, buttonDown=0xb7683670, lastMouseReceiver=@0xb7683674)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212
#33 0xb6f31e2d in QETWidget::translateMouseEvent (this=0xa11d2d0, event=0xbf8f6c8c) at kernel/qapplication_x11.cpp:4044
#34 0xb6f30c11 in QApplication::x11ProcessEvent (this=0xbf8f707c, event=0xbf8f6c8c) at kernel/qapplication_x11.cpp:3162
#35 0xb6f5a63a in x11EventSourceDispatch (s=0xa04b348, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#36 0xb54fc398 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#37 0xb54ffa33 in ?? () from /usr/lib/libglib-2.0.so.0
#38 0x0a0552b0 in ?? ()
#39 0x00000000 in ?? ()