Application: akonadi_contacts_resource (0.1)
KDE Platform Version: 4.3.85 (KDE 4.3.85 (KDE 4.4 Beta2)) (Compiled from sources)
Qt Version: 4.6.0
Operating System: Linux 2.6.30-gentoo-r5 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
I get repeated crashes while writing a to be GnuPG signed Mail to 66 receivers - all but one on blind copy (privacy). 

Also KMail/Kontact is horribly slow at the moment and repeatedly gets stuck for about 30 to 90 seconds. 

I'm not 100% sure that writing the mail is the reason for the Akonadi-Crash, though. 

The crash can be reproduced everytime.

 -- Backtrace:
Application: Akonadi Resource (akonadi_contacts_resource), signal: Aborted
[KCrash Handler]
#5  0x00007f9793fee205 in raise () from /lib/libc.so.6
#6  0x00007f9793fef723 in abort () from /lib/libc.so.6
#7  0x00007f97977eb76d in qt_message_output (msgType=QtFatalMsg, buf=<value optimized out>) at global/qglobal.cpp:2226
#8  0x00007f97977eb90d in qt_message (msgType=QtFatalMsg, msg=0x7f979795a4f0 "ASSERT: \"%s\" in file %s, line %d", ap=0x7fff03ea1780) at global/qglobal.cpp:2272
#9  0x00007f97977ebaa5 in qFatal (msg=<value optimized out>) at global/qglobal.cpp:2455
#10 0x000000000040be3c in ContactsResource::itemAdded (this=0x79a140, item=..., collection=...)
    at /var/tmp/portage/kde-base/akonadi-4.3.85/work/kdepim-runtime-4.3.85/resources/contacts/contactsresource.cpp:253
#11 0x00007f9797c90a4e in Akonadi::AgentBasePrivate::itemAdded (this=0x797730, item=..., collection=...)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/agentbase.cpp:260
#12 0x00007f9797c93a50 in Akonadi::AgentBasePrivate::qt_metacall (this=0x797730, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff03ea1bb0)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/agentbase_p.moc:99
#13 0x00007f979790620f in QMetaObject::activate (sender=0x79ddb0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3286
#14 0x00007f9797d173ea in Akonadi::Monitor::itemAdded (this=0x20ce, _t1=<value optimized out>, _t2=<value optimized out>)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/monitor.moc:174
#15 0x00007f9797d18f04 in Akonadi::MonitorPrivate::emitItemNotification (this=0x79e430, msg=..., item=..., collection=..., collectionDest=<value optimized out>)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/monitor_p.cpp:323
#16 0x00007f9797d19233 in Akonadi::MonitorPrivate::emitNotification (this=0x79e430, msg=...) at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/monitor_p.cpp:195
#17 0x00007f9797d19a6d in Akonadi::MonitorPrivate::dataAvailable (this=0x79e430) at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/monitor_p.cpp:204
#18 0x00007f9797d174d4 in Akonadi::Monitor::qt_metacall (this=0x79ddb0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff03ea1ec0)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/monitor.moc:148
#19 0x00007f9797caa5bd in Akonadi::ChangeRecorder::qt_metacall (this=0x20ce, _c=8398, _id=6, _a=0xffffffffffffffff)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/changerecorder.moc:72
#20 0x00007f979790620f in QMetaObject::activate (sender=0x79e4a8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3286
#21 0x00007f9797cad4d3 in Akonadi::EntityCache<Akonadi::Item, Akonadi::ItemFetchJob, Akonadi::ItemFetchScope>::fetchResult (this=0x79e4a8, job=0x7ba1c0)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/entitycache_p.h:185
#22 0x00007f9797cd45f9 in Akonadi::EntityCacheBase::qt_metacall (this=0x79e4a8, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff03ea20a0)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/entitycache_p.moc:77
#23 0x00007f979790620f in QMetaObject::activate (sender=0x7ba1c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3286
#24 0x00007f97971d0f62 in KJob::result (this=0x20ce, _t1=0x7ba1c0) at /var/tmp/portage/kde-base/kdelibs-4.3.85/work/kdelibs-4.3.85_build/kdecore/kjob.moc:194
#25 0x00007f97971d12c1 in KJob::emitResult (this=0x7ba1c0) at /var/tmp/portage/kde-base/kdelibs-4.3.85/work/kdelibs-4.3.85/kdecore/jobs/kjob.cpp:312
#26 0x00007f9797d0f11a in Akonadi::JobPrivate::handleResponse (this=0x7a24b0, tag=..., data=...) at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/job.cpp:67
#27 0x00007f9797d32a8b in Akonadi::SessionPrivate::dataReceived (this=0x798bb0) at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/session.cpp:121
#28 0x00007f9797d33301 in Akonadi::Session::qt_metacall (this=0x796b40, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff03ea23d0)
    at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85_build/akonadi/session.moc:87
#29 0x00007f979790620f in QMetaObject::activate (sender=0x76abe0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3286
#30 0x00007f9797955cbd in QIODevice::qt_metacall (this=0x76abe0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff03ea2500) at .moc/debug-shared/moc_qiodevice.cpp:77
#31 0x00007f97959bff05 in QLocalSocket::qt_metacall (this=0x20ce, _c=8398, _id=6, _a=0xffffffffffffffff) at .moc/debug-shared/moc_qlocalsocket.cpp:81
#32 0x00007f979790620f in QMetaObject::activate (sender=0x797fe8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xffffffffffffffff) at kernel/qobject.cpp:3286
#33 0x00007f97959b8647 in QAbstractSocketPrivate::canReadNotification (this=0x798140) at socket/qabstractsocket.cpp:626
#34 0x00007f97959a7a31 in QReadNotifier::event (this=<value optimized out>, e=0x20ce) at socket/qnativesocketengine.cpp:1053
#35 0x00007f9794c788e6 in QApplicationPrivate::notify_helper (this=0x6350a0, receiver=0x79ca70, e=0x7fff03ea2af0) at kernel/qapplication.cpp:4242
#36 0x00007f9794c80365 in QApplication::notify (this=0x7fff03ea2dc0, receiver=0x79ca70, e=0x7fff03ea2af0) at kernel/qapplication.cpp:4207
#37 0x00007f979630f941 in KApplication::notify (this=0x7fff03ea2dc0, receiver=0x79ca70, event=0x7fff03ea2af0)
    at /var/tmp/portage/kde-base/kdelibs-4.3.85/work/kdelibs-4.3.85/kdeui/kernel/kapplication.cpp:302
#38 0x00007f97978f1653 in QCoreApplication::notifyInternal (this=0x7fff03ea2dc0, receiver=0x79ca70, event=0x7fff03ea2af0) at kernel/qcoreapplication.cpp:704
#39 0x00007f979791e0b9 in QCoreApplication::sendEvent (source=0x638d50) at kernel/qcoreapplication.h:215
#40 socketNotifierSourceDispatch (source=0x638d50) at kernel/qeventdispatcher_glib.cpp:110
#41 0x00007f9793223fc1 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#42 0x00007f9793227558 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#43 0x00007f979322770c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#44 0x00007f979791dd0c in QEventDispatcherGlib::processEvents (this=0x635000, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#45 0x00007f9794d1e74f in QGuiEventDispatcherGlib::processEvents (this=0x20ce, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#46 0x00007f97978f0032 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#47 0x00007f97978f0404 in QEventLoop::exec (this=0x7fff03ea2d50, flags=...) at kernel/qeventloop.cpp:201
#48 0x00007f97978f2894 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#49 0x00007f9797d24392 in Akonadi::ResourceBase::init (r=0x79a140) at /var/tmp/portage/kde-base/kdepimlibs-4.3.85-r1/work/kdepimlibs-4.3.85/akonadi/resourcebase.cpp:219
#50 0x000000000040fe38 in Akonadi::ResourceBase::init<ContactsResource> (argc=<value optimized out>, argv=<value optimized out>) at /usr/include/akonadi/resourcebase.h:186
#51 0x00007f9793fda5c6 in __libc_start_main () from /lib/libc.so.6
#52 0x0000000000409a79 in _start ()

Reported using DrKonqi