Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.8-64.fc11.i586 i686

What I was doing when the application crashed:
I clicked on a new message in my inbox (Gmail via IMAP).  This message and several others (many --- perhaps all --- with the same subject line) disappeared.  They were still in my Gmail "All Mail" folder.  I read the new one, and then tried to copy it back to my inbox.  This is when the crash happened.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xb4d2f5af in KMFolder::unGetMsg (this=0x2f003a, idx=24546) at /usr/src/debug/kdepim-4.3.1/kmail/kmfolder.cpp:373
#7  0xb5098c41 in KMail::MessageListView::StorageModel::releaseMessage (this=0x9d18178, row=24546) at /usr/src/debug/kdepim-4.3.1/kmail/messagelistview/storagemodel.cpp:247
#8  0xb509d95f in KMail::MessageListView::Widget::setFolder (this=0x8e60fa0, fld=0x0, icon=@0xbf90f25c, preSelectionMode=KMail::MessageListView::Core::PreSelectNone)
    at /usr/src/debug/kdepim-4.3.1/kmail/messagelistview/widget.cpp:91
#9  0xb5095fa8 in KMail::MessageListView::Pane::setCurrentFolder (this=0x8e5f950, fld=0x0, preferEmptyTab=false, preSelectionMode=KMail::MessageListView::Core::PreSelectNone, 
    overrideLabel=@0xbf90f2c8) at /usr/src/debug/kdepim-4.3.1/kmail/messagelistview/pane.cpp:218
#10 0xb4f5dbbe in KMMainWidget::folderSelected (this=0x8e60880, aFolder=0x8cb9980, forceJumpToUnread=false, preferNewTabForOpening=<value optimized out>)
    at /usr/src/debug/kdepim-4.3.1/kmail/kmmainwidget.cpp:3034
#11 0xb4f5dd24 in KMMainWidget::slotFolderViewManagerFolderActivated (this=0x8e60880, fld=0x8cb9980, middleClick=<value optimized out>) at /usr/src/debug/kdepim-4.3.1/kmail/kmmainwidget.cpp:2897
#12 0xb4f5fece in KMMainWidget::qt_metacall (this=0x8e60880, _c=QMetaObject::InvokeMetaMethod, _id=161, _a=0xbf90f434) at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/kmmainwidget.moc:509
#13 0x00a7f853 in QMetaObject::activate (sender=0x89baba0, from_signal_index=5, to_signal_index=5, argv=0xbf90f434) at kernel/qobject.cpp:3113
#14 0x00a804b2 in QMetaObject::activate (sender=0x89baba0, m=0xb533b7f8, local_signal_index=1, argv=0xbf90f434) at kernel/qobject.cpp:3187
#15 0xb4cd3c5f in KMail::FolderViewManager::folderActivated (this=0x89baba0, _t1=0x8cb9980, _t2=false) at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/folderview.moc:89
#16 0xb4cdeade in KMail::FolderView::activateItemInternal (this=0x8eb88e8, fvi=0x9390660, keepSelection=false, notifyManager=true, middleButton=<value optimized out>)
    at /usr/src/debug/kdepim-4.3.1/kmail/folderview.cpp:1010
#17 0xb4cd3833 in KMail::FolderView::activateItem (this=0x8eb88e8, fvi=0x9390660, keepSelection=<value optimized out>, middleButton=<value optimized out>)
    at /usr/src/debug/kdepim-4.3.1/kmail/folderview.cpp:987
#18 0xb4cd4a69 in KMail::FolderView::slotItemClicked (this=0x8eb88e8, item=0x9390668, column=0) at /usr/src/debug/kdepim-4.3.1/kmail/folderview.cpp:527
#19 0xb4cdf5e5 in KMail::FolderView::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=141, _a=0xbf90f644)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/folderview.moc:207
#20 0xb4ce367a in KMail::MainFolderView::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=141, _a=0xbf90f644)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/mainfolderview.moc:64
#21 0x00a7f853 in QMetaObject::activate (sender=0x8eb88e8, from_signal_index=96, to_signal_index=96, argv=0xbf90f644) at kernel/qobject.cpp:3113
#22 0x00a804b2 in QMetaObject::activate (sender=0x8eb88e8, m=0x518f3f0, local_signal_index=1, argv=0xbf90f644) at kernel/qobject.cpp:3187
#23 0x04ee7b69 in QTreeWidget::itemClicked (this=0x8eb88e8, _t1=0x9390668, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:201
#24 0x04eec9c2 in QTreeWidgetPrivate::_q_emitItemClicked (this=0x8eb8968, index=@0xc508468) at itemviews/qtreewidget.cpp:2228
#25 0x04ef5241 in QTreeWidget::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbf90f898) at .moc/release-shared/moc_qtreewidget.cpp:144
#26 0x004bd4da in KPIM::TreeWidget::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=111, _a=0xbf90f898)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/libkdepim/moc_treewidget.cpp:68
#27 0x005233ea in KPIM::FolderTreeWidget::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=111, _a=0xbf90f898)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/libkdepim/foldertreewidget.moc:68
#28 0xb4cdf41a in KMail::FolderView::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=111, _a=0xbf90f898)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/folderview.moc:188
#29 0xb4ce367a in KMail::MainFolderView::qt_metacall (this=0x8eb88e8, _c=QMetaObject::InvokeMetaMethod, _id=111, _a=0xbf90f898)
    at /usr/src/debug/kdepim-4.3.1/i586-redhat-linux-gnu/kmail/mainfolderview.moc:64
#30 0x00a7f853 in QMetaObject::activate (sender=0x8eb88e8, from_signal_index=32, to_signal_index=32, argv=0xbf90f898) at kernel/qobject.cpp:3113
#31 0x00a804b2 in QMetaObject::activate (sender=0x8eb88e8, m=0x518e344, local_signal_index=1, argv=0xbf90f898) at kernel/qobject.cpp:3187
#32 0x04e67e03 in QAbstractItemView::clicked (this=0x8eb88e8, _t1=@0xc508468) at .moc/release-shared/moc_qabstractitemview.cpp:321
#33 0x04e7598a in QAbstractItemView::mouseReleaseEvent (this=0x8eb88e8, event=0xbf910210) at itemviews/qabstractitemview.cpp:1660
#34 0x04eba09c in QTreeView::mouseReleaseEvent (this=0x8eb88e8, event=0xbf910210) at itemviews/qtreeview.cpp:1796
#35 0xb4cd53bd in KMail::FolderView::mouseReleaseEvent (this=0x8eb88e8, e=0xbf910210) at /usr/src/debug/kdepim-4.3.1/kmail/folderview.cpp:927
#36 0x04978b9a in QWidget::event (this=0x8eb88e8, event=0xbf910210) at kernel/qwidget.cpp:7549
#37 0x04d26463 in QFrame::event (this=0x8eb88e8, e=0xbf910210) at widgets/qframe.cpp:559
#38 0x04dc55a4 in QAbstractScrollArea::viewportEvent (this=0x5fe2, e=0xc1ac5589) at widgets/qabstractscrollarea.cpp:962
#39 0x04e78def in QAbstractItemView::viewportEvent (this=0x8eb88e8, event=0xbf910210) at itemviews/qabstractitemview.cpp:1476
#40 0x04eb4214 in QTreeView::viewportEvent (this=0x8eb88e8, event=0xbf910210) at itemviews/qtreeview.cpp:1266
#41 0x04dc7bb5 in QAbstractScrollAreaPrivate::viewportEvent (event=<value optimized out>, this=<value optimized out>) at widgets/qabstractscrollarea_p.h:100
#42 QAbstractScrollAreaFilter::eventFilter (event=<value optimized out>, this=<value optimized out>) at widgets/qabstractscrollarea_p.h:111
#43 0x00a68c9a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x88c1810, receiver=0x91b2330, event=0xbf910210) at kernel/qcoreapplication.cpp:726
#44 0x0492394c in QApplicationPrivate::notify_helper (this=0x88c1810, receiver=0x91b2330, e=0xbf910210) at kernel/qapplication.cpp:4052
#45 0x0492ba9b in QApplication::notify (this=0xbf911bf4, receiver=0x91b2330, e=0xbf910210) at kernel/qapplication.cpp:3758
#46 0x0551460a in KApplication::notify (this=0xbf911bf4, receiver=0x91b2330, event=0xbf910210) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#47 0x00a69b0b in QCoreApplication::notifyInternal (this=0xbf911bf4, receiver=0x91b2330, event=0xbf910210) at kernel/qcoreapplication.cpp:610
#48 0x0492a9de in QCoreApplication::sendSpontaneousEvent (event=<value optimized out>, receiver=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:216
#49 QApplicationPrivate::sendMouseEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qapplication.cpp:2924
#50 0x04999090 in QETWidget::translateMouseEvent (this=0x8e60880, event=0xbf91185c) at kernel/qapplication_x11.cpp:4404
#51 0x04998523 in QApplication::x11ProcessEvent (this=0xbf911bf4, event=0xbf91185c) at kernel/qapplication_x11.cpp:3423
#52 0x049c35d2 in x11EventSourceDispatch (s=0x88c7468, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#53 0x00d03308 in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#54 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#55 0x00d069e0 in g_main_context_iterate (context=0x88c6690, block=<value optimized out>, dispatch=1, self=0x88c3c68) at gmain.c:2455
#56 0x00d06b13 in IA__g_main_context_iteration (context=0x88c6690, may_block=1) at gmain.c:2518
#57 0x00a945ec in QEventDispatcherGlib::processEvents (this=0x889da28, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:327
#58 0x049c2cb5 in QGuiEventDispatcherGlib::processEvents (this=0x889da28, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#59 0x00a680d9 in QEventLoop::processEvents (this=0xbf911b54, flags={i = 36}) at kernel/qeventloop.cpp:149
#60 0x00a6852a in QEventLoop::exec (this=0xbf911b54, flags={i = 0}) at kernel/qeventloop.cpp:201
#61 0x00a6a9af in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#62 0x049237f7 in QApplication::exec () at kernel/qapplication.cpp:3525
#63 0x0804b2e6 in main (argc=1, argv=0xbf911e14) at /usr/src/debug/kdepim-4.3.1/kontact/src/main.cpp:218

Reported using DrKonqi