Application: kontact (4.4 rc2)
KDE Platform Version: 4.3.98 (KDE 4.3.98 (KDE 4.4 RC3)) "release 218"
Qt Version: 4.6.1
Operating System: Linux 2.6.31.8-0.1-default i686
Distribution: "openSUSE 11.2 (i586)"

-- Information about the crash:
After I wrote an email on clicked on sent in the toolbar in the composer window kmail/ kontact crashed. Happened only once so far, while I am usually sending several emails a day.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  QObjectPrivate::~QObjectPrivate (this=0xa2cd9f0, __in_chrg=<value optimized out>) at kernel/qobject.cpp:160
#7  0xb62ca017 in QActionPrivate::~QActionPrivate (this=0xa2cd9f0, __in_chrg=<value optimized out>) at kernel/qaction.cpp:101
#8  0xb6dba037 in cleanup (pointer=<value optimized out>) at ../../src/corelib/tools/qscopedpointer.h:62
#9  ~QScopedPointer (pointer=<value optimized out>) at ../../src/corelib/tools/qscopedpointer.h:100
#10 QObject::~QObject (pointer=<value optimized out>) at kernel/qobject.cpp:992
#11 0xb62c6fa5 in QAction::~QAction (this=0x8d26b40, __in_chrg=<value optimized out>) at kernel/qaction.cpp:674
#12 0xb6db2b1c in QObjectPrivate::deleteChildren (this=0xac5a7b0) at kernel/qobject.cpp:1986
#13 0xb63356c0 in QWidget::~QWidget (this=0xb08a828, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1460
#14 0xb67800ea in QMenu::~QMenu (this=0xb08a828, __in_chrg=<value optimized out>) at widgets/qmenu.cpp:1421
#15 0xb72defd3 in KMenu::KMenuPrivate::~KMenuPrivate (this=0x8aeef90, __in_chrg=<value optimized out>) at /usr/src/debug/kdelibs-4.3.98/kdeui/widgets/kmenu.cpp:135
#16 0xb72df07c in KMenu::~KMenu (this=0x8f604a8, __in_chrg=<value optimized out>) at /usr/src/debug/kdelibs-4.3.98/kdeui/widgets/kmenu.cpp:179
#17 0xb6db2b1c in QObjectPrivate::deleteChildren (this=0x8a03188) at kernel/qobject.cpp:1986
#18 0xb63356c0 in QWidget::~QWidget (this=0xa64fef8, __in_chrg=<value optimized out>) at kernel/qwidget.cpp:1460
#19 0xb6757a4f in QMainWindow::~QMainWindow (this=0xa64fef8, __in_chrg=<value optimized out>) at widgets/qmainwindow.cpp:343
#20 0xb72df2b1 in KMainWindow::~KMainWindow (this=0xa64fef8, __in_chrg=<value optimized out>) at /usr/src/debug/kdelibs-4.3.98/kdeui/widgets/kmainwindow.cpp:476
#21 0xb737137a in KXmlGuiWindow::~KXmlGuiWindow (this=0xa64fef8, __vtt_parm=0xb01f6bec, __in_chrg=<value optimized out>) at /usr/src/debug/kdelibs-4.3.98/kdeui/xmlgui/kxmlguiwindow.cpp:127
#22 0xafec04e9 in KMail::SecondaryWindow::~SecondaryWindow (this=0xa64fef8, __vtt_parm=0xb01f6be8, __in_chrg=<value optimized out>) at /usr/src/debug/kdepim-4.3.98/kmail/secondarywindow.cpp:56
#23 0xafbf59ad in ~Composer (__vtt_parm=<value optimized out>, this=<value optimized out>, __in_chrg=<value optimized out>) at /usr/src/debug/kdepim-4.3.98/kmail/composer.h:38
#24 KMComposeWin::~KMComposeWin (__vtt_parm=<value optimized out>, this=<value optimized out>, __in_chrg=<value optimized out>) at /usr/src/debug/kdepim-4.3.98/kmail/kmcomposewin.cpp:432
#25 0xb6db26e3 in qDeleteInEventHandler (o=0x200000) at kernel/qobject.cpp:3980
#26 0xb6db3e88 in QObject::event (this=0xa64fef8, e=0x0) at kernel/qobject.cpp:1231
#27 0xb632d400 in QWidget::event (this=0xa64fef8, event=0x95c7ba8) at kernel/qwidget.cpp:8435
#28 0xb6758964 in QMainWindow::event (this=0xa64fef8, event=0x95c7ba8) at widgets/qmainwindow.cpp:1435
#29 0xb737d3b4 in KMainWindow::event (this=0xa64fef8, ev=0x95c7ba8) at /usr/src/debug/kdelibs-4.3.98/kdeui/widgets/kmainwindow.cpp:1103
#30 0xb739fd72 in KXmlGuiWindow::event (this=0xa64fef8, ev=0x95c7ba8) at /usr/src/debug/kdelibs-4.3.98/kdeui/xmlgui/kxmlguiwindow.cpp:131
#31 0xb62cd2ac in QApplicationPrivate::notify_helper (this=0x807a510, receiver=0xa64fef8, e=0x95c7ba8) at kernel/qapplication.cpp:4298
#32 0xb62d4188 in QApplication::notify (this=0xa64fef8, receiver=0xa64fef8, e=0x95c7ba8) at kernel/qapplication.cpp:4263
#33 0xb72c3281 in KApplication::notify (this=0xbfdf3264, receiver=0xa64fef8, event=0x95c7ba8) at /usr/src/debug/kdelibs-4.3.98/kdeui/kernel/kapplication.cpp:302
#34 0xb6da2fbe in QCoreApplication::notifyInternal (this=0xbfdf3264, receiver=0xa64fef8, event=0x95c7ba8) at kernel/qcoreapplication.cpp:704
#35 0xb6da59c3 in sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:215
#36 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1345
#37 0xb6da5b1c in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#38 0xb6dd004d in sendPostedEvents () at kernel/qcoreapplication.h:220
#39 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:276
#40 0xb41384c2 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#41 0xb413bd98 in ?? () from /usr/lib/libglib-2.0.so.0
#42 0xb413bebe in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#43 0xb6dcfb31 in QEventDispatcherGlib::processEvents (this=0x8057068, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#44 0xb638d6ca in QGuiEventDispatcherGlib::processEvents (this=0x8057068, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#45 0xb6da162d in QEventLoop::processEvents (this=0xbfdf31c4, flags=) at kernel/qeventloop.cpp:149
#46 0xb6da1a79 in QEventLoop::exec (this=0xbfdf31c4, flags=...) at kernel/qeventloop.cpp:201
#47 0xb6da5bf0 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#48 0xb62cd354 in QApplication::exec () at kernel/qapplication.cpp:3577
#49 0x0804b506 in _start ()

Reported using DrKonqi