Application: kontact (4.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-19-generic i686
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed: it crashes at startup.  After Kubuntu 13.04 upgrage Kontact (kdepim) won't start.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Illegal instruction
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#7  0xb5649773 in WTF::TCMalloc_ThreadCache::InitModule() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#8  0xb5649f08 in WTF::fastMalloc(unsigned int) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#9  0xb566ddd6 in WTF::StringImpl::empty() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#10 0xb5678c2a in WTF::initializeThreading() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#11 0xb5572a4a in JSC::initializeThreading() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#12 0xb400d164 in WebCore::ScriptController::initializeThreading() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#13 0xb3f4ca4d in WebCore::initializeWebCoreQt() () at /build/buildd/qtwebkit-source-2.3.0/Source/WebCore/platform/Timer.h:98
#14 0xb3f050a7 in QWebPagePrivate::QWebPagePrivate(QWebPage*) () at /build/buildd/qtwebkit-source-2.3.0/Source/WebCore/page/DragClient.h:68
#15 0xb3f0e427 in QWebPage::QWebPage(QObject*) () at /build/buildd/qtwebkit-source-2.3.0/Source/WebCore/page/DragClient.h:68
#16 0xb3d58f83 in KWebPage::KWebPage (this=0x8d177a0, parent=0x8d174d8, flags=...) at ../../kdewebkit/kwebpage.cpp:223
#17 0xb3d5a205 in KWebView::KWebView (this=0x8d174d8, parent=0x8d16c28, createCustomPage=true) at ../../kdewebkit/kwebview.cpp:38
#18 0xb76f4be3 in Kontact::MainWindow::initAboutScreen (this=this@entry=0x8eac770) at ../../../kontact/src/mainwindow.cpp:414
#19 0xb76f4e25 in Kontact::MainWindow::initWidgets (this=this@entry=0x8eac770) at ../../../kontact/src/mainwindow.cpp:359
#20 0xb76fcf1e in Kontact::MainWindow::initGUI (this=this@entry=0x8eac770) at ../../../kontact/src/mainwindow.cpp:166
#21 0xb76fdcf7 in Kontact::MainWindow::MainWindow (this=0x8eac770, __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ../../../kontact/src/mainwindow.cpp:152
#22 0x0804b6be in KontactApp::newInstance (this=0xbf8e7b08) at ../../../kontact/src/main.cpp:135
#23 0xb746b5d7 in KUniqueApplicationAdaptor::newInstance (this=this@entry=0x8e7e7a8, asn_id=..., args=...) at ../../kdeui/kernel/kuniqueapplication.cpp:442
#24 0xb746b686 in qt_static_metacall (_a=0xbf8e70ec, _id=0, _o=0x8e7e7a8, _c=<optimized out>) at ./kuniqueapplication_p.moc:58
#25 KUniqueApplicationAdaptor::qt_static_metacall (_o=0x8e7e7a8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbf8e70ec) at ./kuniqueapplication_p.moc:52
#26 0xb746b80c in KUniqueApplicationAdaptor::qt_metacall (this=0x8e7e7a8, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbf8e70ec) at ./kuniqueapplication_p.moc:102
#27 0xb39437be in QDBusConnectionPrivate::deliverCall (this=0x8d03338, object=0x8e7e7a8, msg=..., metaTypes=..., slotIdx=1) at qdbusintegrator.cpp:951
#28 0xb394403a in QDBusConnectionPrivate::activateCall (this=0x8d03338, object=0x8e7e7a8, flags=337, msg=...) at qdbusintegrator.cpp:856
#29 0xb39447e2 in QDBusConnectionPrivate::activateObject (this=0x8d03338, node=..., msg=..., pathStartPos=149485825) at qdbusintegrator.cpp:1427
#30 0xb3944bd8 in QDBusActivateObjectEvent::placeMetaCall (this=0x8e87a48) at qdbusintegrator.cpp:1541
#31 0xb6e6748b in QObject::event (this=this@entry=0xbf8e7b08, e=e@entry=0x8e87a48) at kernel/qobject.cpp:1194
#32 0xb6e506da in QCoreApplication::event (this=this@entry=0xbf8e7b08, e=e@entry=0x8e87a48) at kernel/qcoreapplication.cpp:1758
#33 0xb63433cd in QApplication::event (this=0xbf8e7b08, e=0x8e87a48) at kernel/qapplication.cpp:2549
#34 0xb633ac7c in QApplicationPrivate::notify_helper (this=0x8d1ad98, receiver=0xbf8e7b08, e=0x8e87a48) at kernel/qapplication.cpp:4567
#35 0xb633db94 in QApplication::notify (this=0x8e87a48, receiver=0xbf8e7b08, e=0x8e87a48) at kernel/qapplication.cpp:3949
#36 0xb7467d01 in KApplication::notify (this=0xbf8e7b08, receiver=0xbf8e7b08, event=0x8e87a48) at ../../kdeui/kernel/kapplication.cpp:311
#37 0xb6e4b90e in QCoreApplication::notifyInternal (this=0xbf8e7b08, receiver=0xbf8e7b08, event=0x8e87a48) at kernel/qcoreapplication.cpp:946
#38 0xb6e4f721 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#39 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8ce2390) at kernel/qcoreapplication.cpp:1570
#40 0xb6e4fa8c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#41 0xb6e7daa4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#42 postEventSourceDispatch (s=0x8d1af88) at kernel/qeventdispatcher_glib.cpp:279
#43 0xb30323b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#44 0xb3032750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#45 0xb3032831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#46 0xb6e7dc21 in QEventDispatcherGlib::processEvents (this=this@entry=0x8ce2f10, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#47 0xb63f1a5a in QGuiEventDispatcherGlib::processEvents (this=0x8ce2f10, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#48 0xb6e4a3ec in QEventLoop::processEvents (this=this@entry=0xbf8e7a18, flags=...) at kernel/qeventloop.cpp:149
#49 0xb6e4a6e1 in QEventLoop::exec (this=this@entry=0xbf8e7a18, flags=...) at kernel/qeventloop.cpp:204
#50 0xb6e503fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#51 0xb6338fc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#52 0x0804ab27 in main (argc=1, argv=0xbf8e7be4) at ../../../kontact/src/main.cpp:219

Reported using DrKonqi