Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2)) "release 138"
Qt Version: 4.5.1
Operating System: Linux 2.6.27.23-0.1-default i686
Distribution: "openSUSE 11.1 (i586)"

What I was doing when the application crashed:
I've added a second akonadi ressource to kontacts (addressbook) and removed them again. this crashes kontact

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  KConfigGroup::deleteEntry (this=0x959e9bc, key=0x95c0980 "CollectionUrl", flags={i = -1078143576}) at /usr/include/QtCore/qshareddata.h:187
#7  0xb68cf28c in KConfigGroup::deleteEntry (this=0x959e9bc, key=@0xbfbcd6e0, flags={i = -1078143268}) at /usr/src/debug/kdelibs-4.2.90/kdecore/config/kconfiggroup.cpp:1198
#8  0xafc3ce7a in ResourcePrivateBase::writeConfig (this=0x959e9b0, config=@0x959e9bc) at /usr/src/debug/kdepim-4.2.90/kresources/akonadi/shared/resourceprivatebase.cpp:227
#9  0xafc3d269 in ResourcePrivateBase::doClose (this=0x959e9b0) at /usr/src/debug/kdepim-4.2.90/kresources/akonadi/shared/resourceprivatebase.cpp:109
#10 0xafc17340 in KABC::ResourceAkonadi::doClose (this=0x95d7268) at /usr/src/debug/kdepim-4.2.90/kresources/akonadi/kabc/resourceakonadi.cpp:67
#11 0xb7264007 in KRES::Resource::close (this=0x95d7268) at /usr/src/debug/kdepimlibs-4.2.90/kresources/resource.cpp:141
#12 0xb72a570f in KABC::AddressBook::removeResource (this=0x8604860, resource=0x95d7268) at /usr/src/debug/kdepimlibs-4.2.90/kabc/addressbook.cpp:857
#13 0xafbeac1f in ResourceSelection::remove (this=0x8e00f80) at /usr/src/debug/kdepim-4.2.90/kaddressbook/features/resourceselection.cpp:231
#14 0xafbec07b in ResourceSelection::qt_metacall (this=0x8e00f80, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfbcd99c)
    at /usr/src/debug/kdepim-4.2.90/build/kaddressbook/features/resourceselection.moc:83
#15 0xb6704dc8 in QMetaObject::activate (sender=0x8e02488, from_signal_index=29, to_signal_index=30, argv=0xbfbcd99c) at kernel/qobject.cpp:3120
#16 0xb6705200 in QMetaObject::activate (sender=0x8e02488, m=0xb6427244, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfbcd99c) at kernel/qobject.cpp:3214
#17 0xb6236491 in QAbstractButton::clicked (this=0x8e02488, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#18 0xb5f5f369 in QAbstractButtonPrivate::emitClicked (this=0x8df6158) at widgets/qabstractbutton.cpp:543
#19 0xb5f60f64 in QAbstractButtonPrivate::click (this=0x8df6158) at widgets/qabstractbutton.cpp:536
#20 0xb5f611f6 in QAbstractButton::mouseReleaseEvent (this=0x8e02488, e=0xbfbcdf98) at widgets/qabstractbutton.cpp:1115
#21 0xb6048cbc in QToolButton::mouseReleaseEvent (this=0x8e02488, e=0xbfbcdf98) at widgets/qtoolbutton.cpp:709
#22 0xb5bf0323 in QWidget::event (this=0x8e02488, event=0xbfbcdf98) at kernel/qwidget.cpp:7521
#23 0xb5f5f20e in QAbstractButton::event (this=0x8e02488, e=0xbfbcdf98) at widgets/qabstractbutton.cpp:1077
#24 0xb604b6ea in QToolButton::event (this=0x8e02488, event=0xbfbcdf98) at widgets/qtoolbutton.cpp:1151
#25 0xb5b9969c in QApplicationPrivate::notify_helper (this=0x8084550, receiver=0x8e02488, e=0xbfbcdf98) at kernel/qapplication.cpp:4057
#26 0xb5ba2311 in QApplication::notify (this=0xbfbcf918, receiver=0x8e02488, e=0xbfbcdf98) at kernel/qapplication.cpp:3759
#27 0xb6cd4b9d in KApplication::notify (this=0xbfbcf918, receiver=0x8e02488, event=0xbfbcdf98) at /usr/src/debug/kdelibs-4.2.90/kdeui/kernel/kapplication.cpp:302
#28 0xb66eeadb in QCoreApplication::notifyInternal (this=0xbfbcf918, receiver=0x8e02488, event=0xbfbcdf98) at kernel/qcoreapplication.cpp:610
#29 0xb5ba137e in QApplicationPrivate::sendMouseEvent (receiver=0x8e02488, event=0xbfbcdf98, alienWidget=0x8e02488, nativeWidget=0x80883a0, buttonDown=0xb642ea40, lastMouseReceiver=@0xb642ea44)
    at ../../src/corelib/kernel/qcoreapplication.h:216
#30 0xb5c11506 in QETWidget::translateMouseEvent (this=0x80883a0, event=0xbfbcf62c) at kernel/qapplication_x11.cpp:4446
#31 0xb5c108dd in QApplication::x11ProcessEvent (this=0xbfbcf918, event=0xbfbcf62c) at kernel/qapplication_x11.cpp:3442
#32 0xb5c3a27a in x11EventSourceDispatch (s=0x8079cb0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb4e5f9c8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb4e63083 in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb4e63241 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb671a558 in QEventDispatcherGlib::processEvents (this=0x8084540, flags={i = -1078134808}) at kernel/qeventdispatcher_glib.cpp:324
#37 0xb5c39975 in QGuiEventDispatcherGlib::processEvents (this=0x8084540, flags={i = -1078134760}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb66ed0fa in QEventLoop::processEvents (this=0xbfbcf890, flags={i = -1078134696}) at kernel/qeventloop.cpp:149
#39 0xb66ed53a in QEventLoop::exec (this=0xbfbcf890, flags={i = -1078134632}) at kernel/qeventloop.cpp:200
#40 0xb66ef9e9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#41 0xb5b99517 in QApplication::exec () at kernel/qapplication.cpp:3526
#42 0x0804c04f in main (argc=1, argv=0xbfbcfc14) at /usr/src/debug/kdepim-4.2.90/kontact/src/main.cpp:218

Reported using DrKonqi