Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.8-64.fc11.i586 i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
i closed kmail leaving pc connected to internet, the evening; in the morning, i started kmail and i t crashed

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  QString (other=<value optimized out>, this=<value optimized out>) at /usr/include/QtCore/qstring.h:711
#7  Kontact::Plugin::identifier (other=<value optimized out>, this=<value optimized out>) at /usr/src/debug/kdepim-4.3.1/kontactinterfaces/plugin.cpp:97
#8  0x0063017e in Kontact::MainWindow::activatePluginModule (this=0x9c392d8) at /usr/src/debug/kdepim-4.3.1/kontact/src/mainwindow.cpp:303
#9  0x00630234 in Kontact::MainWindow::setActivePluginModule (this=0x9c392d8, module=@0xbfc4eb08) at /usr/src/debug/kdepim-4.3.1/kontact/src/mainwindow.cpp:281
#10 0x0804baff in KontactApp::newInstance (this=0xbfc4f734) at /usr/src/debug/kdepim-4.3.1/kontact/src/main.cpp:147
#11 0x04477be0 in KUniqueApplicationAdaptor::newInstance (this=0x9bf8840, asn_id=@0xb2609d8, args=@0xb2608a0) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kuniqueapplication.cpp:459
#12 0x044782f2 in KUniqueApplicationAdaptor::qt_metacall (this=0x9bf8840, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfc4ed5c)
    at /usr/src/debug/kdelibs-4.3.1/i586-redhat-linux-gnu/kdeui/kuniqueapplication_p.moc:75
#13 0x0750b894 in QDBusConnectionPrivate::deliverCall (this=0x9b05230, object=0x9bf8840, msg=@0xabc7b08, metaTypes=@0x9be8efc, slotIdx=4) at qdbusintegrator.cpp:891
#14 0x0750ca95 in QDBusConnectionPrivate::activateCall (this=0x9b05230, object=0x9bf8840, flags=337, msg=@0xabc7b08) at qdbusintegrator.cpp:803
#15 0x0750d2f4 in QDBusConnectionPrivate::activateObject (this=0x9b05230, node=@0xabc7af4, msg=@0xabc7b08, pathStartPos=16) at qdbusintegrator.cpp:1347
#16 0x0750d58a in QDBusActivateObjectEvent::placeMetaCall (this=0xabc7ac8) at qdbusintegrator.cpp:1464
#17 0x072f6bc6 in QObject::event (this=0xbfc4f734, e=0xabc7ac8) at kernel/qobject.cpp:1111
#18 0x072e642b in QCoreApplication::event (this=0xbfc4f734, e=0xabc7ac8) at kernel/qcoreapplication.cpp:1434
#19 0x0212d426 in QApplication::event (this=0xbfc4f734, e=0xabc7ac8) at kernel/qapplication.cpp:2317
#20 0x02127974 in QApplicationPrivate::notify_helper (this=0x9b23b10, receiver=0xbfc4f734, e=0xabc7ac8) at kernel/qapplication.cpp:4056
#21 0x0212f0e9 in QApplication::notify (this=0xbfc4f734, receiver=0xbfc4f734, e=0xabc7ac8) at kernel/qapplication.cpp:3603
#22 0x0447060a in KApplication::notify (this=0xbfc4f734, receiver=0xbfc4f734, event=0xabc7ac8) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#23 0x072e6b0b in QCoreApplication::notifyInternal (this=0xbfc4f734, receiver=0xbfc4f734, event=0xabc7ac8) at kernel/qcoreapplication.cpp:610
#24 0x072e7732 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#25 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#26 0x072e78ed in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#27 0x073119bf in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:218
#28 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:210
#29 0x070fe308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x071019e0 in ?? () from /lib/libglib-2.0.so.0
#31 0x07101b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x073115ec in QEventDispatcherGlib::processEvents (this=0x9aeda18, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#33 0x021c6cb5 in QGuiEventDispatcherGlib::processEvents (this=0x9aeda18, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x072e50d9 in QEventLoop::processEvents (this=0xbfc4f694, flags={i = 36}) at kernel/qeventloop.cpp:149
#35 0x072e552a in QEventLoop::exec (this=0xbfc4f694, flags={i = 0}) at kernel/qeventloop.cpp:201
#36 0x072e79af in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x021277f7 in QApplication::exec () at kernel/qapplication.cpp:3525
#38 0x0804b2e6 in main (argc=1, argv=0xbfc4f954) at /usr/src/debug/kdepim-4.3.1/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 207960

Reported using DrKonqi