Version:           1.12.2 (using KDE 4.3.2) 
OS:                Linux

When I receive signed emails stemming from outlook clients and want to open it, kmail (standalone or component of kontact, its equal) freezes. If I try to right click on such a mail, KDE freezes completely (alt+ctrl+f1.. doesn't help either, only hard reboot). 


Reproducible: Always

Steps to Reproduce:
Open kmail or the mail component in kontact, receive a signed email from an outlook client and select it for opening.

Actual Results:  
kmail crashes with segmentation fault, or, in worst case: KDE crashes. Only restart helps.

Expected Results:  
Not crashing, just show the email.

Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x65726e55 in ?? ()
#7  0xb095775e in ?? () from /usr/lib/libkmailprivate.so.4
#8  0xb095c5db in ?? () from /usr/lib/libkmailprivate.so.4
#9  0xb094de48 in ?? () from /usr/lib/libkmailprivate.so.4
#10 0xb07b1e67 in ?? () from /usr/lib/libkmailprivate.so.4
#11 0xb079f4d9 in ?? () from /usr/lib/libkmailprivate.so.4
#12 0xb079f6cb in ?? () from /usr/lib/libkmailprivate.so.4
#13 0xb07ac9d4 in ?? () from /usr/lib/libkmailprivate.so.4
#14 0xb65e6263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#15 0xb65e6ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0xb6620667 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#17 0xb65eb9ae in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQtCore.so.4
#18 0xb65e03bf in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#19 0xb6a2cf54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#20 0xb6a3467c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#21 0xb747cbfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#22 0xb65d06cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#23 0xb65fd7ce in ?? () from /usr/lib/libQtCore.so.4
#24 0xb65fb0e0 in ?? () from /usr/lib/libQtCore.so.4
#25 0xb48fae88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#26 0xb48fe730 in ?? () from /lib/libglib-2.0.so.0
#27 0xb48fe863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#28 0xb65fb02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#29 0xb6acdbe5 in ?? () from /usr/lib/libQtGui.so.4
#30 0xb65cec79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#31 0xb65cf0ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#32 0xb65d153f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#33 0xb6a2cdd7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#34 0x0804b4e6 in _start ()


started manually:
donna@debussy:~$ Object::disconnect: Unexpected null parameter
*** KMail got signal 11 (Crashing)
KCrash: Application 'kontact' crashing...
sock_file=/home/donna/.kde/socket-debussy/kdeinit4__0