Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.34-020634-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
Kontact rarely (maybe 1 out of 10 times) crashes while exiting. Backtrace attached.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0xb36c9990 (LWP 2562))]

Thread 2 (Thread 0xabfc0b70 (LWP 2611)):
#0  0xb4287e16 in *__GI_clock_gettime (clock_id=-1272397836, tp=0xabfbff98) at ../sysdeps/unix/clock_gettime.c:100
#1  0xb6da06fb in qt_gettime () at kernel/qcore_unix.cpp:111
#2  0xb6da5825 in QTimerInfoList::updateCurrentTime (this=0xae801924) at kernel/qeventdispatcher_unix.cpp:340
#3  0xb6da586a in QTimerInfoList::timerWait (this=0xae801924, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#4  0xb6da3818 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xabfc00ac) at kernel/qeventdispatcher_glib.cpp:136
#5  0xb6da38a5 in timerSourcePrepare (source=0x0, timeout=0xb428bff4) at kernel/qeventdispatcher_glib.cpp:169
#6  0xb41f8aca in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0xb41f8ee9 in ?? () from /lib/libglib-2.0.so.0
#8  0xb41f94b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0xb6da360f in QEventDispatcherGlib::processEvents (this=0xab88f80, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#10 0xb6d76059 in QEventLoop::processEvents (this=0xabfc0270, flags=) at kernel/qeventloop.cpp:149
#11 0xb6d764aa in QEventLoop::exec (this=0xabfc0270, flags=...) at kernel/qeventloop.cpp:201
#12 0xb6c725a8 in QThread::exec (this=0xab51b90) at thread/qthread.cpp:487
#13 0xb6d55c1b in QInotifyFileSystemWatcherEngine::run (this=0xab51b90) at io/qfilesystemwatcher_inotify.cpp:248
#14 0xb6c7532e in QThreadPrivate::start (arg=0xab51b90) at thread/qthread_unix.cpp:248
#15 0xb44e696e in start_thread (arg=0xabfc0b70) at pthread_create.c:300
#16 0xb5ffba4e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb36c9990 (LWP 2562)):
[KCrash Handler]
#6  QString::clear (this=0xbeaa7d0, event=0xbff497a0) at /usr/include/qt4/QtCore/qstring.h:713
#7  KHTMLPart::handleMouseMoveEventDrag (this=0xbeaa7d0, event=0xbff497a0) at ../../khtml/khtml_part.cpp:6310
#8  0xb596d4cc in KHTMLPart::khtmlMouseMoveEvent (this=0xbeaa7d0, event=0xbff497a0) at ../../khtml/khtml_part.cpp:6405
#9  0xb59474af in KHTMLPart::customEvent (this=0xbeaa7d0, event=0xbff497a0) at ../../khtml/khtml_part.cpp:5955
#10 0xb6d8845c in QObject::event (this=0xbeaa7d0, e=0x0) at kernel/qobject.cpp:1279
#11 0xb62c74dc in QApplicationPrivate::notify_helper (this=0x9f6dcd0, receiver=0xbeaa7d0, e=0xbff497a0) at kernel/qapplication.cpp:4300
#12 0xb62ce05e in QApplication::notify (this=0xbff4a944, receiver=0xbeaa7d0, e=0xbff497a0) at kernel/qapplication.cpp:3704
#13 0xb72c8f2a in KApplication::notify (this=0xbff4a944, receiver=0xbeaa7d0, event=0xbff497a0) at ../../kdeui/kernel/kapplication.cpp:302
#14 0xb6d77a3b in QCoreApplication::notifyInternal (this=0xbff4a944, receiver=0xbeaa7d0, event=0xbff497a0) at kernel/qcoreapplication.cpp:704
#15 0xb593ee31 in QCoreApplication::sendEvent (this=0xc42c348, _mouse=0xbff4a090) at /usr/include/qt4/QtCore/qcoreapplication.h:215
#16 KHTMLView::mouseMoveEvent (this=0xc42c348, _mouse=0xbff4a090) at ../../khtml/khtmlview.cpp:1551
#17 0xb632569a in QWidget::event (this=0xc42c348, event=0xbff4a090) at kernel/qwidget.cpp:7983
#18 0xb6721fd3 in QFrame::event (this=0xc42c348, e=0xbff4a090) at widgets/qframe.cpp:557
#19 0xb593a89c in KHTMLView::widgetEvent (this=0xc42c348, e=0x0) at ../../khtml/khtmlview.cpp:2362
#20 0xb593ab95 in KHTMLView::eventFilter (this=0xc42c348, o=0xb410c60, e=0xbff4a090) at ../../khtml/khtmlview.cpp:2207
#21 0xb6d76cda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9f6dcd0, receiver=0xb410c60, event=0xbff4a090) at kernel/qcoreapplication.cpp:819
#22 0xb62c74b9 in QApplicationPrivate::notify_helper (this=0x9f6dcd0, receiver=0xb410c60, e=0xbff4a090) at kernel/qapplication.cpp:4296
#23 0xb62ce9f7 in QApplication::notify (this=0xbff4a944, receiver=0xb410c60, e=0xbff4a090) at kernel/qapplication.cpp:3865
#24 0xb72c8f2a in KApplication::notify (this=0xbff4a944, receiver=0xb410c60, event=0xbff4a090) at ../../kdeui/kernel/kapplication.cpp:302
#25 0xb6d77a3b in QCoreApplication::notifyInternal (this=0xbff4a944, receiver=0xb410c60, event=0xbff4a090) at kernel/qcoreapplication.cpp:704
#26 0xb62cd952 in QCoreApplication::sendEvent (receiver=0xb410c60, event=0xbff4a090, alienWidget=0xb410c60, nativeWidget=0xc78b710, buttonDown=0xb6c0b058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 QApplicationPrivate::sendMouseEvent (receiver=0xb410c60, event=0xbff4a090, alienWidget=0xb410c60, nativeWidget=0xc78b710, buttonDown=0xb6c0b058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#28 0xb6359088 in QETWidget::translateMouseEvent (this=0xc78b710, event=0xbff4a5ac) at kernel/qapplication_x11.cpp:4368
#29 0xb6358511 in QApplication::x11ProcessEvent (this=0xbff4a944, event=0xbff4a5ac) at kernel/qapplication_x11.cpp:3379
#30 0xb638760a in x11EventSourceDispatch (s=0x9f733e8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#31 0xb41f55e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0xb41f92d8 in ?? () from /lib/libglib-2.0.so.0
#33 0xb41f94b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0xb6da35d5 in QEventDispatcherGlib::processEvents (this=0x9f4d070, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#35 0xb6387135 in QGuiEventDispatcherGlib::processEvents (this=0x9f4d070, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0xb6d76059 in QEventLoop::processEvents (this=0xbff4a8a4, flags=) at kernel/qeventloop.cpp:149
#37 0xb6d764aa in QEventLoop::exec (this=0xbff4a8a4, flags=...) at kernel/qeventloop.cpp:201
#38 0xb6d7a69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#39 0xb62c7577 in QApplication::exec () at kernel/qapplication.cpp:3579
#40 0x0804b472 in main (argc=1, argv=0xbff4ab64) at ../../../kontact/src/main.cpp:224

Reported using DrKonqi