Bug 231011

Version:           1.9.10 (using 3.5.10, Kubuntu (hardy) 4:3.5.10-0ubuntu1~hardy1)
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.24-21-generic

In kontact, while I read email from IMAP account (MS Exchange), it often shows some emails as completely blank (with no message body, although from, to, subject, etc. are shown). This happens both in message pane and opening message in a separate window. 
Shortly after viewing a few of such messages as blank (even though they are not blank), kontact crashes. 
Here is the trace: 
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[Thread debugging using libthread_db enabled]
[New Thread 0xb5df36c0 (LWP 11138)]
[New Thread 0xb3423b90 (LWP 11142)]
[New Thread 0xb3c24b90 (LWP 11141)]
[New Thread 0xb4425b90 (LWP 11140)]
[New Thread 0xb4c26b90 (LWP 11139)]
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[KCrash handler]
#6  0xb7ef2410 in __kernel_vsyscall ()
#7  0xb5e6c085 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb5e6da01 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb607b480 in __gnu_cxx::__verbose_terminate_handler ()
   from /usr/lib/libstdc++.so.6
#10 0xb6078d05 in ?? () from /usr/lib/libstdc++.so.6
#11 0xb6078d42 in std::terminate () from /usr/lib/libstdc++.so.6
#12 0xb6079605 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.6
#13 0xb4f0d96f in KMReaderWin::setMsg () from /usr/lib/libkmailprivate.so
#14 0xb507b94e in KMMainWidget::slotMsgSelected ()
   from /usr/lib/libkmailprivate.so
#15 0xb508c41d in KMMainWidget::qt_invoke () from /usr/lib/libkmailprivate.so
#16 0xb66ac704 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0xb4eb014e in KMHeaders::selected () from /usr/lib/libkmailprivate.so
#18 0xb4eb705b in KMHeaders::highlightMessage ()
   from /usr/lib/libkmailprivate.so
#19 0xb4eb749c in KMHeaders::highlightMessage ()
   from /usr/lib/libkmailprivate.so
#20 0xb4ec3d1a in KMHeaders::qt_invoke () from /usr/lib/libkmailprivate.so
#21 0xb66ac704 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#22 0xb6a55ebf in QListView::currentChanged () from /usr/lib/libqt-mt.so.3
#23 0xb67a57e3 in QListView::setCurrentItem () from /usr/lib/libqt-mt.so.3
#24 0xb4eb7d9f in KMHeaders::selectPrevMessage ()
   from /usr/lib/libkmailprivate.so
#25 0xb4eb7e41 in KMHeaders::prevMessage () from /usr/lib/libkmailprivate.so
#26 0xb50720c3 in KMMainWidget::slotPrevMessage ()
   from /usr/lib/libkmailprivate.so
#27 0xb508b9fc in KMMainWidget::qt_invoke () from /usr/lib/libkmailprivate.so
#28 0xb66ac704 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#29 0xb66ad1e9 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#30 0xb6fe8d69 in KAction::activated () from /usr/lib/libkdeui.so.4
#31 0xb70296a2 in KAction::slotActivated () from /usr/lib/libkdeui.so.4
#32 0xb7114e71 in KAction::qt_invoke () from /usr/lib/libkdeui.so.4
#33 0xb66ac704 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#34 0xb66ad1e9 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#35 0xb6d16959 in KAccelPrivate::menuItemActivated ()
   from /usr/lib/libkdecore.so.4
#36 0xb6d64577 in KAccelPrivate::emitActivatedSignal ()
   from /usr/lib/libkdecore.so.4
#37 0xb6df1dc8 in KAccelPrivate::eventFilter () from /usr/lib/libkdecore.so.4
#38 0xb66aa492 in QObject::activate_filters () from /usr/lib/libqt-mt.so.3
#39 0xb66aa510 in QObject::event () from /usr/lib/libqt-mt.so.3
#40 0xb66e2d65 in QWidget::event () from /usr/lib/libqt-mt.so.3
#41 0xb67b82da in QMainWindow::event () from /usr/lib/libqt-mt.so.3
#42 0xb6640c36 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#43 0xb6642c00 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#44 0xb6e019b2 in KApplication::notify () from /usr/lib/libkdecore.so.4
#45 0xb6d718a0 in KAccelEventHandler::x11Event ()
   from /usr/lib/libkdecore.so.4
#46 0xb6dffe2a in KApplication::x11EventFilter ()
   from /usr/lib/libkdecore.so.4
#47 0xb65bd4a0 in ?? () from /usr/lib/libqt-mt.so.3
#48 0xb65cdaaf in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#49 0xb65e5943 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#50 0xb665bf90 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#51 0xb665bc8e in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#52 0xb66427df in QApplication::exec () from /usr/lib/libqt-mt.so.3
#53 0x0805c123 in ?? ()
#54 0xb5e57450 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#55 0x0805b7f1 in ?? ()