Application that crashed: kmail
Version of the application: 1.12.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Run Kmail, configure accounts, configured spamassassin spamd support.

get a new mail and it was automatically marked as spam and moved to trush folder.

When click to check, crash...

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f18945de7f0 (LWP 2664))]

Thread 2 (Thread 0x7f187498c910 (LWP 2715)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f1891cda4fb in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x2b7eb68, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x2b7eb68, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f189055378c in QHostInfoAgent::run (this=0x2b7eb50) at kernel/qhostinfo.cpp:260
#4  0x00007f1891cd9445 in QThreadPrivate::start (arg=0x2b7eb50) at thread/qthread_unix.cpp:188
#5  0x00007f188c5f1a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f18914c47bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f18945de7f0 (LWP 2664)):
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007f18931a029a in KMReaderWin::parseMsg (this=0x1ec5c00, aMsg=0x2a774c0) at ../../kmail/kmreaderwin.cpp:1681
#7  0x00007f189318deda in KMReaderWin::displayMessage (this=0x1ec5c00) at ../../kmail/kmreaderwin.cpp:1605
#8  0x00007f189318e0b4 in KMReaderWin::updateReaderWin (this=0x1ec5c00) at ../../kmail/kmreaderwin.cpp:1545
#9  0x00007f1893199f9d in KMReaderWin::qt_metacall (this=0x1ec5c00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa890fe70) at ./kmreaderwin.moc:168
#10 0x00007f1891dd4ddc in QMetaObject::activate (sender=0x1ec5ca8, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3113
#11 0x00007f1891dced83 in QObject::event (this=0x1ec5ca8, e=0x7fffa890f5c0) at kernel/qobject.cpp:1075
#12 0x00007f1892252efc in QApplicationPrivate::notify_helper (this=0x1c66840, receiver=0x1ec5ca8, e=0x7fffa8910470) at kernel/qapplication.cpp:4056
#13 0x00007f189225a1ce in QApplication::notify (this=0x7fffa89108e0, receiver=0x1ec5ca8, e=0x7fffa8910470) at kernel/qapplication.cpp:4021
#14 0x00007f1894015ab6 in KApplication::notify (this=0x7fffa89108e0, receiver=0x1ec5ca8, event=0x7fffa8910470) at ../../kdeui/kernel/kapplication.cpp:302
#15 0x00007f1891dbfc2c in QCoreApplication::notifyInternal (this=0x7fffa89108e0, receiver=0x1ec5ca8, event=0x7fffa8910470) at kernel/qcoreapplication.cpp:610
#16 0x00007f1891dea862 in QCoreApplication::sendEvent (this=0x1c6e8b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#17 QTimerInfoList::activateTimers (this=0x1c6e8b0) at kernel/qeventdispatcher_unix.cpp:572
#18 0x00007f1891de825d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#19 0x00007f1889058bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#20 0x00007f188905c588 in ?? () from /lib/libglib-2.0.so.0
#21 0x00007f188905c6b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#22 0x00007f1891de81a6 in QEventDispatcherGlib::processEvents (this=0x1c32930, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#23 0x00007f18922e74be in QGuiEventDispatcherGlib::processEvents (this=0x2a774c0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#24 0x00007f1891dbe532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#25 0x00007f1891dbe904 in QEventLoop::exec (this=0x7fffa8910710, flags=) at kernel/qeventloop.cpp:201
#26 0x00007f1891dc0ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#27 0x0000000000402fe9 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../kmail/main.cpp:146
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

Reported using DrKonqi