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:
Second time crash has happened, finally have proper dbg packages to report information.  Using Imap. I changed one of the visual preferences for the window, clicked ok.  A few seconds later kmail crashed.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  0x00007fef9a34d6d6 in KMail::ISubject::notify (this=0x27da4a0) at ../../kmail/isubject.cpp:30
#6  0x00007fef9a038eec in KMMessage::updateBodyPart (this=0x27da3d0, partSpecifier=) at ../../kmail/kmmessage.cpp:3235
#7  0x00007fef9a321bca in KMail::ImapJob::slotGetMessageResult (this=0x1fa33f0, job=<value optimized out>) at ../../kmail/imapjob.cpp:435
#8  0x00007fef9a32604b in KMail::ImapJob::qt_metacall (this=0x1fa33f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4a445280) at ./imapjob.moc:82
#9  0x00007fef98d62ddc in QMetaObject::activate (sender=0x232c850, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#10 0x00007fef9a9ebaf2 in KJob::result (this=0x132b1e8, _t1=0x232c850) at ./kjob.moc:188
#11 0x00007fef9a9ebe6f in KJob::emitResult (this=0x232c850) at ../../kdecore/jobs/kjob.cpp:304
#12 0x00007fef92b0bd93 in KIO::SimpleJob::slotFinished (this=0x232c850) at ../../kio/kio/job.cpp:477
#13 0x00007fef92b0c253 in KIO::TransferJob::slotFinished (this=0x232c850) at ../../kio/kio/job.cpp:948
#14 0x00007fef92b0ab61 in KIO::TransferJob::qt_metacall (this=0x232c850, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4a4456a0) at ./jobclasses.moc:343
#15 0x00007fef98d62ddc in QMetaObject::activate (sender=0x20adaa0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#16 0x00007fef92bcca81 in KIO::SlaveInterface::dispatch (this=0x20adaa0, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#17 0x00007fef92bc9333 in KIO::SlaveInterface::dispatch (this=0x20adaa0) at ../../kio/kio/slaveinterface.cpp:91
#18 0x00007fef92bbc14d in KIO::Slave::gotInput (this=0x20adaa0) at ../../kio/kio/slave.cpp:322
#19 0x00007fef92bbe26c in KIO::Slave::qt_metacall (this=0x20adaa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4a445a60) at ./slave.moc:76
#20 0x00007fef98d62ddc in QMetaObject::activate (sender=0x20a25f0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#21 0x00007fef92ad8f57 in KIO::ConnectionPrivate::dequeue (this=0x27bf670) at ../../kio/kio/connection.cpp:82
#22 0x00007fef92ad907d in KIO::Connection::qt_metacall (this=0x20a25f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x28dec90) at ./connection.moc:73
#23 0x00007fef98d5d0f9 in QObject::event (this=0x20a25f0, e=0x1eaf9a0) at kernel/qobject.cpp:1111
#24 0x00007fef991e0efc in QApplicationPrivate::notify_helper (this=0x1097c60, receiver=0x20a25f0, e=0x1eaf9a0) at kernel/qapplication.cpp:4056
#25 0x00007fef991e81ce in QApplication::notify (this=0x7fff4a446530, receiver=0x20a25f0, e=0x1eaf9a0) at kernel/qapplication.cpp:4021
#26 0x00007fef9afa3ab6 in KApplication::notify (this=0x7fff4a446530, receiver=0x20a25f0, event=0x1eaf9a0) at ../../kdeui/kernel/kapplication.cpp:302
#27 0x00007fef98d4dc2c in QCoreApplication::notifyInternal (this=0x7fff4a446530, receiver=0x20a25f0, event=0x1eaf9a0) at kernel/qcoreapplication.cpp:610
#28 0x00007fef98d4e80a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1045d00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#29 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1045d00) at kernel/qcoreapplication.cpp:1247
#30 0x00007fef98d76533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#31 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#32 0x00007fef8ffe6bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x00007fef8ffea588 in ?? () from /lib/libglib-2.0.so.0
#34 0x00007fef8ffea6b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x00007fef98d761a6 in QEventDispatcherGlib::processEvents (this=0x1045930, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#36 0x00007fef992754be in QGuiEventDispatcherGlib::processEvents (this=0x132b1e8, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x00007fef98d4c532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#38 0x00007fef98d4c904 in QEventLoop::exec (this=0x7fff4a446360, flags=) at kernel/qeventloop.cpp:201
#39 0x00007fef98d4eab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#40 0x0000000000402fe9 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../kmail/main.cpp:146

This bug may be a duplicate of or related to bug 205309

Reported using DrKonqi