Version:           1.9.3 (using KDE 3.5.3, Gentoo)
Compiler:          gcc version 3.4.6 (Gentoo 3.4.6-r1, ssp-3.4.5-1.0, pie-8.7.9)
OS:                Linux (i686) release 2.6.16-gentoo-r9-bug5964-try2

I hit delete, KMail crashed.  After a restart the mail was not deleted.

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1518930256 (LWP 3241)]
[New Thread -1545557072 (LWP 3301)]
[New Thread -1537164368 (LWP 3300)]
[New Thread -1528771664 (LWP 3299)]
[New Thread -1520378960 (LWP 3298)]
[KCrash handler]
#6  0x6a627553 in ?? ()
#7  0xa7e5397e in KMail::ImapJob::slotGetNextMessage ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#8  0xa7e5476e in KMail::ImapJob::init ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#9  0xa7e54f5e in KMail::ImapJob::execute ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#10 0xa7e4a0dd in KMail::FolderJob::start ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#11 0xa7d77315 in KMFolderImap::doCreateJob ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#12 0xa7cf4943 in FolderStorage::createJob ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#13 0xa7cd56d0 in KMFolder::createJob ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#14 0xa7e2e2ef in KMMainWidget::slotMsgSelected ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#15 0xa7e3dae3 in KMMainWidget::qt_invoke ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#16 0xa5f4ac54 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#17 0xa7c9b635 in KMHeaders::selected ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#18 0xa7c9b78b in KMHeaders::highlightMessage ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#19 0xa7c9c1c7 in KMHeaders::finalizeMove ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#20 0xa7c9c8dc in KMHeaders::deleteMsg ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#21 0xa7e279aa in KMMainWidget::slotTrashMsg ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#22 0xa7e3dc06 in KMMainWidget::qt_invoke ()
   from /usr/kde/3.5/lib/libkmailprivate.so
#23 0xa5f4ac54 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#24 0xa5f4b372 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#25 0xa6856e29 in KAction::activated () from /usr/kde/3.5/lib/libkdeui.so.4
#26 0xa68578a2 in KAction::slotActivated ()
   from /usr/kde/3.5/lib/libkdeui.so.4
#27 0xa685c1b6 in KAction::qt_invoke () from /usr/kde/3.5/lib/libkdeui.so.4
#28 0xa5f4ac54 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#29 0xa5f4b372 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#30 0xa6600ba9 in KAccelPrivate::menuItemActivated ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#31 0xa6601157 in KAccelPrivate::emitActivatedSignal ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#32 0xa6601d03 in KAccelPrivate::eventFilter ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#33 0xa5f4801f in QObject::activate_filters ()
   from /usr/qt/3/lib/libqt-mt.so.3
#34 0xa5f480f2 in QObject::event () from /usr/qt/3/lib/libqt-mt.so.3
#35 0xa5f83b3c in QWidget::event () from /usr/qt/3/lib/libqt-mt.so.3
#36 0xa60466d2 in QMainWindow::event () from /usr/qt/3/lib/libqt-mt.so.3
#37 0xa5ee662f in QApplication::internalNotify ()
   from /usr/qt/3/lib/libqt-mt.so.3
#38 0xa5ee6e26 in QApplication::notify () from /usr/qt/3/lib/libqt-mt.so.3
#39 0xa656e546 in KApplication::notify ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#40 0xa65ff872 in KAccelEventHandler::x11Event ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#41 0xa65718d7 in KApplication::x11EventFilter ()
   from /usr/kde/3.5/lib/libkdecore.so.4
#42 0xa5e6ff75 in qt_set_x11_event_filter () from /usr/qt/3/lib/libqt-mt.so.3
#43 0xafbe81c0 in ?? ()
#44 0x00000001 in ?? ()
#45 0xa63aa940 in ?? () from /usr/qt/3/lib/libqt-mt.so.3
#46 0xa63aa940 in ?? () from /usr/qt/3/lib/libqt-mt.so.3
#47 0x0000006b in ?? ()
#48 0xafbe8088 in ?? ()
#49 0xa5e7dc3d in QApplication::x11ProcessEvent ()
   from /usr/qt/3/lib/libqt-mt.so.3
#50 0xafbe83e0 in ?? ()
#51 0x080626d0 in ?? ()
#52 0x00000000 in ?? ()