Application: kontact (4.9)
KDE Platform Version: 4.9.00
Qt Version: 4.8.1
Operating System: Linux 3.2.0-29-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
open email with new event, click click on add event, kontact crashes
this happens always - it worked until some days ago, since then it is crashing all the time

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe8b1e9d7c0 (LWP 6867))]

Thread 4 (Thread 0x7fe89521e700 (LWP 6868)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fe8ae69edec in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fe8ae69ef19 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fe8a9b4ee9a in start_thread (arg=0x7fe89521e700) at pthread_create.c:308
#4  0x00007fe8af3d04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fe894905700 (LWP 6869)):
#0  0x00007fe8af3c4b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe8a9682036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe8a9682164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe8afb45426 in QEventDispatcherGlib::processEvents (this=0x7fe8900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fe8afb14c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe8afb14ed7 in QEventLoop::exec (this=0x7fe894904dc0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fe8afa13fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fe8afa16fcb in QThreadPrivate::start (arg=0x1b66b20) at thread/qthread_unix.cpp:298
#8  0x00007fe8a9b4ee9a in start_thread (arg=0x7fe894905700) at pthread_create.c:308
#9  0x00007fe8af3d04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fe84701a700 (LWP 6873)):
#0  0x00007fe8af3c4b03 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fe8a9682036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe8a9682164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe8afb45426 in QEventDispatcherGlib::processEvents (this=0x7fe8400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fe8afb14c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fe8afb14ed7 in QEventLoop::exec (this=0x7fe847019d90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fe8afa13fa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fe8afaf49ff in QInotifyFileSystemWatcherEngine::run (this=0x1cce120) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fe8afa16fcb in QThreadPrivate::start (arg=0x1cce120) at thread/qthread_unix.cpp:298
#9  0x00007fe8a9b4ee9a in start_thread (arg=0x7fe84701a700) at pthread_create.c:308
#10 0x00007fe8af3d04bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe8b1e9d7c0 (LWP 6867)):
[KCrash Handler]
#6  mailICal (viewerInstance=0x4675bf0, delMessage=true, status=..., subject=..., iCal=..., to=..., receiver=..., this=<optimized out>) at ../../../../plugins/messageviewer/bodypartformatter/text_calendar.cpp:1492
#7  (anonymous namespace)::UrlHandler::mail (viewerInstance=0x4675bf0, incidence=..., status=..., method=<optimized out>, receiver=..., to=..., type=(anonymous namespace)::UrlHandler::Answer, this=<optimized out>) at ../../../../plugins/messageviewer/bodypartformatter/text_calendar.cpp:742
#8  0x00007fe83c4166a5 in (anonymous namespace)::UrlHandler::handleInvitation (iCal=..., status=KCalCore::Attendee::Accepted, part=<optimized out>, viewerInstance=0x4675bf0, this=<optimized out>) at ../../../../plugins/messageviewer/bodypartformatter/text_calendar.cpp:979
#9  0x00007fe83c417d7a in (anonymous namespace)::UrlHandler::handleClick (this=<optimized out>, viewerInstance=0x4675bf0, part=0x7fff0561cef0, path=...) at ../../../../plugins/messageviewer/bodypartformatter/text_calendar.cpp:1230
#10 0x00007fe84a2a62d1 in MessageViewer::URLHandlerManager::BodyPartURLHandlerManager::handleClick (this=<optimized out>, url=..., w=0x455e0a0) at ../../messageviewer/urlhandlermanager.cpp:284
#11 0x00007fe84a2a6918 in MessageViewer::URLHandlerManager::handleClick (this=<optimized out>, url=..., w=0x455e0a0) at ../../messageviewer/urlhandlermanager.cpp:371
#12 0x00007fe84a2b53e1 in MessageViewer::ViewerPrivate::slotUrlOpen (this=0x455e0a0, url=...) at ../../messageviewer/viewer_p.cpp:2054
#13 0x00007fe84a2ca99e in MessageViewer::ViewerPrivate::qt_static_metacall (_o=0x455e0a0, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./viewer_p.moc:212
#14 0x00007fe8afb2f446 in QObject::event (this=0x455e0a0, e=<optimized out>) at kernel/qobject.cpp:1195
#15 0x00007fe8b050f894 in notify_helper (e=0x4980810, receiver=0x455e0a0, this=0x1a1da70) at kernel/qapplication.cpp:4559
#16 QApplicationPrivate::notify_helper (this=0x1a1da70, receiver=0x455e0a0, e=0x4980810) at kernel/qapplication.cpp:4531
#17 0x00007fe8b0514713 in QApplication::notify (this=0x7fff0561d960, receiver=0x455e0a0, e=0x4980810) at kernel/qapplication.cpp:4420
#18 0x00007fe8b1249456 in KApplication::notify (this=0x7fff0561d960, receiver=0x455e0a0, event=0x4980810) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x00007fe8afb15e9c in QCoreApplication::notifyInternal (this=0x7fff0561d960, receiver=0x455e0a0, event=0x4980810) at kernel/qcoreapplication.cpp:876
#20 0x00007fe8afb19c6a in sendEvent (event=0x4980810, receiver=0x455e0a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#21 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x19e2380) at kernel/qcoreapplication.cpp:1500
#22 0x00007fe8afb44f93 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#23 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#24 0x00007fe8a9681d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fe8a96820a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fe8a9682164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fe8afb453bf in QEventDispatcherGlib::processEvents (this=0x19e3c10, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#28 0x00007fe8b05b7d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007fe8afb14c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007fe8afb14ed7 in QEventLoop::exec (this=0x7fff0561d8f0, flags=...) at kernel/qeventloop.cpp:204
#31 0x00007fe8afb19f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#32 0x00000000004035c9 in main (argc=1, argv=0x7fff0561df88) at ../../../kontact/src/main.cpp:219

Reported using DrKonqi