Application that crashed: kontact
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I tried to change the colors for new emails, as it did not work, I ended kontact and started it again. Then kontact crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  Kontact::MainWindow::activatePluginModule (this=0xa9ace0) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:303
#6  0x00000000004036a2 in KontactApp::newInstance (this=0x7fffe9bd2cc0) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:147
#7  0x00007f7ade0a0656 in KUniqueApplicationAdaptor::newInstance (this=0x9a4e20, asn_id=<value optimized out>, args=@0x3308610) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kuniqueapplication.cpp:459
#8  0x00007f7ade0a06e2 in KUniqueApplicationAdaptor::qt_metacall (this=0x9a4e20, _c=QMetaObject::InvokeMetaMethod, _id=-373483041, _a=0x7fffe9bd1f60)
    at /build/buildd/kde4libs-4.3.0/obj-x86_64-linux-gnu/kdeui/kuniqueapplication_p.moc:75
#9  0x00007f7adc430453 in QDBusConnectionPrivate::deliverCall (this=0x924790, object=0x9a4e20, msg=@0xb8c560, metaTypes=@0xa03950, slotIdx=4) at qdbusintegrator.cpp:891
#10 0x00007f7adc431778 in QDBusConnectionPrivate::activateCall (this=0x924790, object=0x9a4e20, flags=337, msg=@0xb8c560) at qdbusintegrator.cpp:803
#11 0x00007f7adc431da1 in QDBusConnectionPrivate::activateObject (this=0x924790, node=@0xb8c538, msg=@0xb8c560, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#12 0x00007f7adc4320b8 in QDBusActivateObjectEvent::placeMetaCall (this=0xb8c4f0) at qdbusintegrator.cpp:1464
#13 0x00007f7adc1265d8 in QObject::event (this=0x7fffe9bd2cc0, e=0xb8c4f0) at kernel/qobject.cpp:1111
#14 0x00007f7adcc9a6ca in QApplication::event (this=0x7fffe9bd2cc0, e=0xb8c4f0) at kernel/qapplication.cpp:2317
#15 0x00007f7adcc94f4d in QApplicationPrivate::notify_helper (this=0x934690, receiver=0x7fffe9bd2cc0, e=0xb8c4f0) at kernel/qapplication.cpp:4056
#16 0x00007f7adcc9d18a in QApplication::notify (this=0x7fffe9bd2cc0, receiver=0x7fffe9bd2cc0, e=0xb8c4f0) at kernel/qapplication.cpp:4021
#17 0x00007f7ade09971b in KApplication::notify (this=0x7fffe9bd2cc0, receiver=0x7fffe9bd2cc0, event=0xb8c4f0) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#18 0x00007f7adc1166ac in QCoreApplication::notifyInternal (this=0x7fffe9bd2cc0, receiver=0x7fffe9bd2cc0, event=0xb8c4f0) at kernel/qcoreapplication.cpp:610
#19 0x00007f7adc11731a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x907850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0x00007f7adc13fe03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 0x00007f7ad586720a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0x00007f7ad586a8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#23 0x00007f7ad586aa7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#24 0x00007f7adc13fa8f in QEventDispatcherGlib::processEvents (this=0x9070a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#25 0x00007f7adcd2dbdf in QGuiEventDispatcherGlib::processEvents (this=0xa9ace0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x00007f7adc114f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -373478432}) at kernel/qeventloop.cpp:149
#27 0x00007f7adc115314 in QEventLoop::exec (this=0x7fffe9bd2c20, flags={i = -373478352}) at kernel/qeventloop.cpp:201
#28 0x00007f7adc1175e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x0000000000404945 in main (argc=1, argv=0x7fffe9bd33a8) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 204951

Reported using DrKonqi