Application: akonadi_kcal_resource (0.1)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-15-generic i686
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I've modified one of the todo items and then switched to summary in kontact.

 -- Backtrace:
Application: Akonadi Resource (akonadi_kcal_resource), signal: Segmentation fault
[KCrash Handler]
#6  QListData::begin (this=0x82b7ea0, incidence=0x8355740) at /usr/include/qt4/QtCore/qlist.h:93
#7  QList<KCal::Incidence*>::contains (this=0x82b7ea0, incidence=0x8355740) at /usr/include/qt4/QtCore/qlist.h:757
#8  KCal::ListBase<KCal::Incidence>::removeRef (this=0x82b7ea0, incidence=0x8355740) at ../../kcal/listbase.h:118
#9  KCal::Incidence::removeRelation (this=0x82b7ea0, incidence=0x8355740) at ../../kcal/incidence.cpp:529
#10 0x003b6e75 in ~Incidence (this=0x8355740, __in_chrg=<value optimized out>) at ../../kcal/incidence.cpp:201
#11 0x003b9996 in ~Todo (this=0x8355740, __in_chrg=<value optimized out>) at ../../kcal/todo.cpp:105
#12 0x08057c80 in ?? ()
#13 0x0062e1ce in Akonadi::ItemPrivate::~ItemPrivate() () from /usr/lib/libakonadi-kde.so.4
#14 0x005a65e8 in ~QSharedDataPointer (this=0x840f084, __in_chrg=<value optimized out>) at /usr/include/qt4/QtCore/qshareddata.h:90
#15 ~Entity (this=0x840f084, __in_chrg=<value optimized out>) at ../../akonadi/entity.cpp:66
#16 0x0062c0cd in ~Item (this=0x840f084, __in_chrg=<value optimized out>) at ../../akonadi/item.cpp:57
#17 0x00647d93 in Akonadi::ItemModifyJobPrivate::~ItemModifyJobPrivate() () from /usr/lib/libakonadi-kde.so.4
#18 0x0064e441 in ~Job (this=0x82f0760, __in_chrg=<value optimized out>) at ../../akonadi/job.cpp:204
#19 0x00644ccd in ~ItemModifyJob (this=0x82f0760, __in_chrg=<value optimized out>) at ../../akonadi/itemmodifyjob.cpp:88
#20 0x00c5fc15 in qDeleteInEventHandler (o=0x0) at kernel/qobject.cpp:3998
#21 0x00c612d8 in QObject::event (this=0x82f0760, e=0x8064701) at kernel/qobject.cpp:1231
#22 0x012524dc in QApplicationPrivate::notify_helper (this=0x8164b48, receiver=0x82f0760, e=0x8354d90) at kernel/qapplication.cpp:4300
#23 0x0125903e in QApplication::notify (this=0xbfcd1b80, receiver=0x82f0760, e=0x8354d90) at kernel/qapplication.cpp:3704
#24 0x00f45d4a in KApplication::notify (this=0xbfcd1b80, receiver=0x82f0760, event=0x8354d90) at ../../kdeui/kernel/kapplication.cpp:302
#25 0x00c508db in QCoreApplication::notifyInternal (this=0xbfcd1b80, receiver=0x82f0760, event=0x8354d90) at kernel/qcoreapplication.cpp:704
#26 0x00c53313 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8150068) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8150068) at kernel/qcoreapplication.cpp:1345
#28 0x00c5347d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#29 0x00c7c99f in QCoreApplication::sendPostedEvents (s=0x81678c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#30 postEventSourceDispatch (s=0x81678c0) at kernel/qeventdispatcher_glib.cpp:276
#31 0x07698e05 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x0769cb08 in ?? () from /lib/libglib-2.0.so.0
#33 0x0769ccc8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x00c7c495 in QEventDispatcherGlib::processEvents (this=0x814fc00, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#35 0x01311eb5 in QGuiEventDispatcherGlib::processEvents (this=0x814fc00, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0x00c4eef9 in QEventLoop::processEvents (this=0xbfcd1ae4, flags=) at kernel/qeventloop.cpp:149
#37 0x00c4f34a in QEventLoop::exec (this=0xbfcd1ae4, flags=...) at kernel/qeventloop.cpp:201
#38 0x00c5353f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#39 0x01252577 in QApplication::exec () at kernel/qapplication.cpp:3579
#40 0x00666ce3 in Akonadi::ResourceBase::init (r=0x821cdb0) at ../../akonadi/resourcebase.cpp:219
#41 0x0804fd43 in _start ()

Reported using DrKonqi