Unfortunately, the backtrace is not useful. Can you reproduce the crash easily ?

If so, we'd be interested in a better backtrace. You will find more informations on this page : http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports

You will need the kdepimlibs and akonadi debug packages.

Now I got a crash with debuginfo packages installed, if you need more info contact me.

Application: Akonadi Resource (akonadi_kcal_resource), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fc69d11ee73 in KCal::ConfirmSaveDialog::addIncidences(KCal::ListBase<KCal::Incidence> const&, QString const&) () from /usr/lib64/libkcal.so.4
#6  0x00007fc692118c94 in KCal::ResourceGroupwareBase::confirmSave (this=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/kresources/lib/kcal_resourcegroupwarebase.cpp:405
#7  0x00007fc692119eed in KCal::ResourceGroupwareBase::doSave (this=0x16b6ab0, syncCache=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/kresources/lib/kcal_resourcegroupwarebase.cpp:322
#8  0x00007fc69d109b64 in KCal::ResourceCached::save(KCal::ResourceCached::CacheAction, KCal::Incidence*) () from /usr/lib64/libkcal.so.4
#9  0x00007fc69d109ca2 in KCal::ResourceCached::slotSave() () from /usr/lib64/libkcal.so.4
#10 0x00007fc69d109dac in KCal::ResourceCached::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkcal.so.4
#11 0x00007fc692119d70 in KCal::ResourceGroupwareBase::qt_metacall (this=0x7fff7810caf0, _c=28498176, _id=-2116676863, _a=0xfffffffffff8ba24)
    at /usr/src/debug/kdepim-4.2.90/x86_64-redhat-linux-gnu/kresources/lib/kcal_resourcegroupwarebase.moc:71
#12 0x0000003881d54cec in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#13 0x0000003881d4ebc3 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#14 0x000000388358ea8c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#15 0x0000003883595e3e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#16 0x0000003c7d40feb6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#17 0x0000003881d3f61c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#18 0x0000003881d6a622 in ?? () from /usr/lib64/libQtCore.so.4
#19 0x0000003881d6815d in ?? () from /usr/lib64/libQtCore.so.4
#20 0x0000003880c37afe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#21 0x0000003880c3b1d8 in ?? () from /lib64/libglib-2.0.so.0
#22 0x0000003880c3b300 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#23 0x0000003881d680a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#24 0x000000388362162e in ?? () from /usr/lib64/libQtGui.so.4
#25 0x0000003881d3df52 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#26 0x0000003881d3e324 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#27 0x0000003881d403c9 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#28 0x0000003c806be592 in Akonadi::ResourceBase::init(Akonadi::ResourceBase*) () from /usr/lib64/libakonadi-kde.so.4
#29 0x0000000000408f98 in Akonadi::ResourceBase::init<KCalResource> (argv=<value optimized out>, argc=<value optimized out>) at /usr/include/kde4/akonadi/resourcebase.h:185
#30 main (argv=<value optimized out>, argc=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/akonadi/resources/kcal/kcalresource.cpp:684

Systems Fedora 11, KDE 4.2.90, 64bit

And some other source packages: 

Application: Akonadi Resource (akonadi_kcal_resource), signal: Segmentation fault
[KCrash Handler]
#5  0x000000000216e3e8 in ?? ()
#6  0x00007f1f30631e76 in KCal::ConfirmSaveDialog::addIncidences (this=<value optimized out>, incidences=<value optimized out>, operation=<value optimized out>)
    at /usr/src/debug/kdepimlibs-4.2.90/kcal/confirmsavedialog.cpp:92
#7  0x00007f1f28428c94 in KCal::ResourceGroupwareBase::confirmSave (this=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/kresources/lib/kcal_resourcegroupwarebase.cpp:405
#8  0x00007f1f28429eed in KCal::ResourceGroupwareBase::doSave (this=0x203b870, syncCache=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/kresources/lib/kcal_resourcegroupwarebase.cpp:322
#9  0x00007f1f3061cb64 in KCal::ResourceCached::save (this=0x203b870, action=KCal::ResourceCached::SyncCache, incidence=0x0) at /usr/src/debug/kdepimlibs-4.2.90/kcal/resourcecached.cpp:487
#10 0x00007f1f3061cca2 in KCal::ResourceCached::slotSave (this=0x203b870) at /usr/src/debug/kdepimlibs-4.2.90/kcal/resourcecached.cpp:819
#11 0x00007f1f3061cdac in KCal::ResourceCached::qt_metacall (this=0x203b870, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>)
    at /usr/src/debug/kdepimlibs-4.2.90/x86_64-redhat-linux-gnu/kcal/resourcecached.moc:72
#12 0x00007f1f28429d70 in KCal::ResourceGroupwareBase::qt_metacall (this=0x7fffc87e0840, _c=36255472, _id=-2116676863, _a=0xfffffffffff8ba24)
    at /usr/src/debug/kdepim-4.2.90/x86_64-redhat-linux-gnu/kresources/lib/kcal_resourcegroupwarebase.moc:71
#13 0x0000003881d54cec in QMetaObject::activate (sender=0x203b210, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0xfffffffffff8ba24) at kernel/qobject.cpp:3120
#14 0x0000003881d4ebc3 in QObject::event (this=0x203b210, e=0x22936f0) at kernel/qobject.cpp:1082
#15 0x000000388358ea8c in QApplicationPrivate::notify_helper (this=0x1fb2f40, receiver=0x203b210, e=0x7fffc87e12c0) at kernel/qapplication.cpp:4057
#16 0x0000003883595e3e in QApplication::notify (this=0x7fffc87e15d0, receiver=0x203b210, e=0x7fffc87e12c0) at kernel/qapplication.cpp:4022
#17 0x0000003c7d40feb6 in KApplication::notify (this=0x7fffc87e15d0, receiver=0x203b210, event=0x7fffc87e12c0) at /usr/src/debug/kdelibs-4.2.90/kdeui/kernel/kapplication.cpp:302
#18 0x0000003881d3f61c in QCoreApplication::notifyInternal (this=0x7fffc87e15d0, receiver=0x203b210, event=0x7fffc87e12c0) at kernel/qcoreapplication.cpp:610
#19 0x0000003881d6a622 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#20 QTimerInfoList::activateTimers (event=<value optimized out>, receiver=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:572
#21 0x0000003881d6815d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:164
#22 0x0000003880c37afe in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#23 0x0000003880c3b1d8 in ?? () from /lib64/libglib-2.0.so.0
#24 0x0000003880c3b300 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#25 0x0000003881d680a6 in QEventDispatcherGlib::processEvents (this=0x1f9aba0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#26 0x000000388362162e in QGuiEventDispatcherGlib::processEvents (this=0x7fffc87e0840, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#27 0x0000003881d3df52 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 36}) at kernel/qeventloop.cpp:149
#28 0x0000003881d3e324 in QEventLoop::exec (this=0x7fffc87e1560, flags={i = 0}) at kernel/qeventloop.cpp:200
#29 0x0000003881d403c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#30 0x0000003c806be592 in Akonadi::ResourceBase::init (r=0x2097500) at /usr/src/debug/kdepimlibs-4.2.90/akonadi/resourcebase.cpp:225
#31 0x0000000000408f98 in Akonadi::ResourceBase::init<KCalResource> (argv=<value optimized out>, argc=<value optimized out>) at /usr/include/kde4/akonadi/resourcebase.h:185
#32 main (argv=<value optimized out>, argc=<value optimized out>) at /usr/src/debug/kdepim-4.2.90/akonadi/resources/kcal/kcalresource.cpp:684

This crash report is at least 3 years old and there were no further comments or status updates since then.

Therefore we believe that this crash is already fixed in recent KDE 4 versions or the backtrace is no longer applicable to the current KDE 4 sources.

If the crash still happens with a recent KDE version (4.10.5 or 4.11), please add an updated backtrace or provide steps to reproduce. For more information, see http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports

(To prevent automatic closing of this bug in the future, please set the bug status to ASSIGNED or CONFIRMED)

The KResource compatibility bridges don't exist anymore with KDE PIM 15.08.