Version:           kdepim-4.2.0-2.fc10 (using KDE 4.2.0)
OS:                Linux
Installed from:    Fedora RPMs

After:

    yum: Updated: kdesdk-libs-4.2.0-2.fc10.i386
    yum: Updated: kdesdk-devel-4.2.0-2.fc10.i386
    yum: Updated: kdesdk-utils-4.2.0-2.fc10.i386
    yum: Updated: ksysguardd-4.2.0-10.fc10.i386
    yum: Updated: akonadi-1.1.1-3.fc10.i386
    yum: Updated: kdesdk-4.2.0-2.fc10.i386
    yum: Updated: kdebase-workspace-libs-4.2.0-10.fc10.i386
    yum: Updated: kdebase-workspace-4.2.0-10.fc10.i386
    yum: Updated: kdebase-workspace-devel-4.2.0-10.fc10.i386

from kde-testing, I get crashes of Kmail.  Kmail does not display
messages in the preview window any more and crashes after exiting the
app and intermittently under other circumstances.

Many stack traces are marked "This backtrace appears to be of no use."

How to reproduce (blank preview):

Start kontact(kmail).
Click on mail folder containing messages.
Preview panel is blank.

How to reproduce (crash):

Start kontact(kmail).
Exit kmail.
Crash.

Here's a trace after closing Kmail with ctrl-q:

Application: Kontact (kontact), signal SIGSEGV
[Current thread is 1 (Thread 0xb7f76770 (LWP 26935))]

Thread 1 (Thread 0xb7f76770 (LWP 26935)):
[KCrash Handler]
#6  0x07c032b0 in DwHeaders::FindField () from /usr/lib/libmimelib.so.4
#7  0x05a84e21 in GpgME::Signature::summary () from /usr/lib/libkmailprivate.so.4
#8  0x05a89c55 in GpgME::Signature::summary () from /usr/lib/libkmailprivate.so.4
#9  0x05ce321b in ?? () from /usr/lib/libkmailprivate.so.4
#10 0x05b83963 in ?? () from /usr/lib/libkmailprivate.so.4
#11 0x05b8eb7a in ?? () from /usr/lib/libkmailprivate.so.4
#12 0x05b7fde8 in ?? () from /usr/lib/libkmailprivate.so.4
#13 0x05b80000 in ?? () from /usr/lib/libkmailprivate.so.4
#14 0x05b8e470 in ?? () from /usr/lib/libkmailprivate.so.4
#15 0x022eedf0 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0x022efb72 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0x02329c37 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#18 0x022f579e in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#19 0x022e98cf in QObject::event () from /usr/lib/libQtCore.so.4
#20 0x06a3368c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#21 0x06a3b4ce in QApplication::notify () from /usr/lib/libQtGui.so.4
#22 0x07798fdd in KApplication::notify () from /usr/lib/libkdeui.so.5
#23 0x022da1c1 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#24 0x02308081 in ?? () from /usr/lib/libQtCore.so.4
#25 0x023048a0 in ?? () from /usr/lib/libQtCore.so.4
#26 0x00bb7238 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#27 0x00bba8e3 in ?? () from /lib/libglib-2.0.so.0
#28 0x00bbaaa1 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#29 0x023047f8 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#30 0x06acc515 in ?? () from /usr/lib/libQtGui.so.4
#31 0x022d888a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#32 0x022d8a4a in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#33 0x022db105 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#34 0x06a33507 in QApplication::exec () from /usr/lib/libQtGui.so.4
#35 0x0804bc1f in _start ()