Application that crashed: kontact
Version of the application: 4.3.5
KDE Version: 4.3.5 (KDE 4.3.5) "release 0"
Qt Version: 4.5.3
Operating System: Linux 2.6.31.12-0.2-default i686
Distribution: "openSUSE 11.2 (i586)"

What I was doing when the application crashed:
I have reported this issue in the past report # 246944. 
(1) However, then I was using SAMBA and have changed my home network to using NFS v3 and that seemed to have solved the issue.
(2) Apparently the issue has not resolved itself by using NFS v3 instead of SAMBA for updating/changing information from one computer to another on my home network.
(3) this has happened 2 other time but there was insufficient information from the backtrace to make a usable bug report.
(4) The changes made to the std.ics on computer 1 when updating from computer 2 are present when KOrganizer on computer 1 is restarted.
(5)Perhaps if the std.ics file was sitting on a readyNAS server or if the computer where the std.ics file was not being used. Perhaps then all 3 computers on my home network could access it without any issue? It may simply be that since it is in use by computer 1 where the file resides there is a issue with the file changing from a remote source (computer 2)?

Settings computer 2, Troom: NFS Client
	General settings
Name:::
  NFS Server
Calendar format:::
  VCalendar 
Calendar in local file resource setting:::
  /home/Troom/nfs.server/.kde/share/apps/korganiozer/std.ics

Settings computer 1, Froom: NFS Server
  /home/Froom/.kde4/share/apps/korganizer

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xafc87131 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkorganizerprivate.so.4
#7  0xafc8466a in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkorganizerprivate.so.4
#8  0xafc858f5 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkorganizerprivate.so.4
#9  0xafc85972 in QWidget::setUpdatesEnabled(bool) () from /usr/lib/libkorganizerprivate.so.4
#10 0xafcd11aa in ?? () from /usr/lib/libkorganizerprivate.so.4
#11 0xafcbeb6a in CalendarView::updateView(QDate const&, QDate const&, bool) () from /usr/lib/libkorganizerprivate.so.4
#12 0xafcc08b2 in CalendarView::updateView() () from /usr/lib/libkorganizerprivate.so.4
#13 0xafcbe250 in CalendarView::resourcesChanged() () from /usr/lib/libkorganizerprivate.so.4
#14 0xafccf9cb in CalendarView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkorganizerprivate.so.4
#15 0xb6e45864 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#16 0xb6e46585 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#17 0xb5030895 in KCal::Calendar::calendarChanged() () from /usr/lib/libkcal.so.4
#18 0xb5030902 in KCal::Calendar::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkcal.so.4
#19 0xb509a802 in KCal::CalendarResources::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkcal.so.4
#20 0xb6e45864 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#21 0xb6e46585 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#22 0xb5087115 in KCal::ResourceCalendar::resourceChanged(KCal::ResourceCalendar*) () from /usr/lib/libkcal.so.4
#23 0xb5088eb5 in KCal::ResourceLocal::reload() () from /usr/lib/libkcal.so.4
#24 0xb5089026 in KCal::ResourceLocal::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkcal.so.4
#25 0xb6e45864 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#26 0xb6e46585 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#27 0xb583efb5 in KDirWatch::dirty(QString const&) () from /usr/lib/libkio.so.5
#28 0xb583f8e4 in KDirWatch::setDirty(QString const&) () from /usr/lib/libkio.so.5
#29 0xb5840120 in ?? () from /usr/lib/libkio.so.5
#30 0xb5849a33 in ?? () from /usr/lib/libkio.so.5
#31 0xb584a014 in ?? () from /usr/lib/libkio.so.5
#32 0xb6e45864 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#33 0xb6e46585 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#34 0xb6e81715 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#35 0xb6e4b196 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQtCore.so.4
#36 0xb6e3f51b in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#37 0xb64758fc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#38 0xb647d34e in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#39 0xb7372521 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#40 0xb6e2f32e in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#41 0xb6e5e356 in ?? () from /usr/lib/libQtCore.so.4
#42 0xb6e5b325 in ?? () from /usr/lib/libQtCore.so.4
#43 0xb477d4c2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#44 0xb4780d98 in ?? () from /usr/lib/libglib-2.0.so.0
#45 0xb4780ebe in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#46 0xb6e5b011 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#47 0xb651729a in ?? () from /usr/lib/libQtGui.so.4
#48 0xb6e2d98d in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#49 0xb6e2ddd9 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#50 0xb6e30270 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#51 0xb6475774 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#52 0x0804b546 in _start ()

Reported using DrKonqi