Version:           kmail 1.7.1 (using KDE KDE 3.3.1)
Installed from:    Slackware Packages
OS:                Linux

Kmail crash every time i hit CTRL+J after selecting with CTRL+A messages from a folder.

Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 2355)]
[KCrash handler]
#5  0x086751e4 in ?? ()
#6  0xb6542ec4 in QListViewItem::firstChild ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#7  0xb7d61c4c in KMHeaders::msgRemoved ()
   from /opt/kde/lib/libkmailprivate.so.0
#8  0xb7d6c710 in KMHeaders::qt_invoke ()
   from /opt/kde/lib/libkmailprivate.so.0
#9  0xb645f18c in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#10 0xb7d98222 in KMFolder::msgRemoved ()
   from /opt/kde/lib/libkmailprivate.so.0
#11 0xb7d98a17 in KMFolder::qt_emit () from /opt/kde/lib/libkmailprivate.so.0
#12 0xb645f1c1 in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#13 0xb7db43c2 in FolderStorage::msgRemoved ()
   from /opt/kde/lib/libkmailprivate.so.0
#14 0xb7db1a84 in FolderStorage::take () from /opt/kde/lib/libkmailprivate.so.0
#15 0xb7e4c4cc in KMFolderMaildir::take ()
   from /opt/kde/lib/libkmailprivate.so.0
#16 0xb7d96311 in KMFolder::take () from /opt/kde/lib/libkmailprivate.so.0
#17 0xb7de217e in KMFilterMgr::endFiltering ()
   from /opt/kde/lib/libkmailprivate.so.0
#18 0xb7de26f2 in KMFilterMgr::process ()
   from /opt/kde/lib/libkmailprivate.so.0
#19 0xb7d6288e in KMHeaders::slotFilterMsg ()
   from /opt/kde/lib/libkmailprivate.so.0
#20 0xb7d632d2 in KMHeaders::applyFiltersOnMsg ()
   from /opt/kde/lib/libkmailprivate.so.0
#21 0xb7ed74ca in KMMainWidget::slotApplyFilters ()
   from /opt/kde/lib/libkmailprivate.so.0
#22 0xb7ecf202 in KMMainWidget::qt_invoke ()
   from /opt/kde/lib/libkmailprivate.so.0
#23 0xb645f18c in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#24 0xb645efb4 in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#25 0xb6cd12db in KAction::activated () from /opt/kde/lib/libkdeui.so.4
#26 0xb6cd0caf in KAction::slotActivated () from /opt/kde/lib/libkdeui.so.4
#27 0xb6cd14e1 in KAction::qt_invoke () from /opt/kde/lib/libkdeui.so.4
#28 0xb645f18c in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#29 0xb645efb4 in QObject::activate_signal ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#30 0xb6ac0deb in KAccelPrivate::menuItemActivated ()
   from /opt/kde/lib/libkdecore.so.4
#31 0xb6abf64c in KAccelPrivate::eventFilter ()
   from /opt/kde/lib/libkdecore.so.4
#32 0xb645cabe in QObject::activate_filters ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#33 0xb645c9ec in QObject::event () from /usr/lib/qt/lib/libqt-mt.so.3
#34 0xb649524f in QWidget::event () from /usr/lib/qt/lib/libqt-mt.so.3
#35 0xb6553a02 in QMainWindow::event () from /usr/lib/qt/lib/libqt-mt.so.3
#36 0xb640284f in QApplication::internalNotify ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#37 0xb6402344 in QApplication::notify () from /usr/lib/qt/lib/libqt-mt.so.3
#38 0xb6a2f873 in KApplication::notify () from /opt/kde/lib/libkdecore.so.4
#39 0xb6abe5db in KAccelEventHandler::x11Event ()
   from /opt/kde/lib/libkdecore.so.4
#40 0xb6a3583f in KApplication::x11EventFilter ()
   from /opt/kde/lib/libkdecore.so.4
#41 0xb638c1d8 in qt_set_x11_event_filter () from /usr/lib/qt/lib/libqt-mt.so.3
#42 0xb6395e7b in QApplication::x11ProcessEvent ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#43 0xb63aced4 in QEventLoop::processEvents ()
   from /usr/lib/qt/lib/libqt-mt.so.3
#44 0xb6414ba8 in QEventLoop::enterLoop () from /usr/lib/qt/lib/libqt-mt.so.3
#45 0xb6414a58 in QEventLoop::exec () from /usr/lib/qt/lib/libqt-mt.so.3
#46 0xb6402aa1 in QApplication::exec () from /usr/lib/qt/lib/libqt-mt.so.3
#47 0x0804a3c4 in ?? ()
#48 0xbffff660 in ?? ()
#49 0xbffff570 in ?? ()
#50 0x00000000 in ?? ()
#51 0x00000000 in ?? ()
#52 0xb68862c0 in vtable for QGArray () from /usr/lib/qt/lib/libqt-mt.so.3
#53 0x0813e588 in ?? ()
#54 0xb5cfbe32 in malloc () from /lib/libc.so.6
#55 0xb5cb0549 in __libc_start_main () from /lib/libc.so.6
#56 0x0804a121 in ?? ()

also i have a crash in kwrite, maybe this can help:
bash-3.00$ kwrite
KCrash: Application 'kwrite' crashing...
bash-3.00$ 
Using host libthread_db library "/lib/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 16384 (LWP 2407)]
[KCrash handler]
#5  0xb7fe3a97 in log () from /lib/snoopy.so
#6  0xb67526dc in KateRendererConfig::setLineMarkerColor ()
   from /opt/kde/lib/kde3/libkatepart.so
#7  0xb6752100 in KateRendererConfig::setSchema ()
   from /opt/kde/lib/kde3/libkatepart.so
#8  0xb6751949 in KateRendererConfig::readConfig ()
   from /opt/kde/lib/kde3/libkatepart.so
#9  0xb675148d in KateRendererConfig::KateRendererConfig ()
   from /opt/kde/lib/kde3/libkatepart.so
#10 0xb6723e50 in KateFactory::KateFactory ()
   from /opt/kde/lib/kde3/libkatepart.so
#11 0xb672428b in KateFactory::self () from /opt/kde/lib/kde3/libkatepart.so
#12 0xb6724879 in KateFactoryPublic::createPartObject ()
   from /opt/kde/lib/kde3/libkatepart.so
#13 0xb7f75bff in KParts::Factory::createPart ()
   from /opt/kde/lib/libkparts.so.2
#14 0xb7fa01d6 in KTextEditor::pluginViewInterface ()
   from /opt/kde/lib/libktexteditor.so.0
#15 0xb7f9ffb3 in KTextEditor::pluginViewInterface ()
   from /opt/kde/lib/libktexteditor.so.0
#16 0xb7f9fd25 in KTextEditor::createDocument ()
   from /opt/kde/lib/libktexteditor.so.0
#17 0xb7fa75bf in KTextEditor::EditorChooser::createDocument ()
   from /opt/kde/lib/libktexteditor.so.0
#18 0xb7fda8bb in KWrite::KWrite () from /opt/kde/lib/libkdeinit_kwrite.so
#19 0xb7fde343 in kdemain () from /opt/kde/lib/libkdeinit_kwrite.so
#20 0x0804871b in ?? ()
#21 0x00000001 in ?? ()
#22 0xbffff7b4 in ?? ()
#23 0xbffff788 in ?? ()
#24 0xb6a01549 in __libc_start_main () from /lib/libc.so.6
#25 0xb6a01549 in __libc_start_main () from /lib/libc.so.6
#26 0x08048651 in ?? ()