Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
I had been reading a mail in my INBOX (using GMail account with connected IMAP) deleted the mail, selected a subfolder from INBOX and clicked on an unread mail, when Kontact/Kmail crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  ~Item (this=0xd994788, __in_chrg=<value optimized out>) at ../../messagelist/core/item.cpp:50
#7  0x02649566 in ~MessageItem (this=0xd994788, __in_chrg=<value optimized out>) at ../../messagelist/core/messageitem.cpp:109
#8  0x0263816c in MessageList::Core::Item::killAllChildItems (this=0x9cb30a8) at ../../messagelist/core/item.cpp:410
#9  0x026565e1 in MessageList::Core::Model::setStorageModel (this=0x9c536b0, storageModel=0x0, preSelectionMode=MessageList::Core::PreSelectNone) at ../../messagelist/core/model.cpp:658
#10 0x02671c4a in MessageList::Core::View::setStorageModel (this=0x9de5428, storageModel=0x0, preSelectionMode=MessageList::Core::PreSelectNone) at ../../messagelist/core/view.cpp:215
#11 0x026813c6 in MessageList::Core::Widget::setStorageModel (this=0x9ddf308, storageModel=0x0, preSelectionMode=MessageList::Core::PreSelectNone) at ../../messagelist/core/widgetbase.cpp:375
#12 0x048b3a6c in KMail::MessageListView::Widget::setFolder (this=0x9ddf308, fld=0x0, icon=..., preSelectionMode=MessageList::Core::PreSelectNone) at ../../kmail/messagelistview/widget.cpp:116
#13 0x048ab858 in KMail::MessageListView::Pane::setCurrentFolder (this=0x9cbc0b8, fld=0x0, preferEmptyTab=false, preSelectionMode=MessageList::Core::PreSelectNone, overrideLabel=...)
    at ../../kmail/messagelistview/pane.cpp:235
#14 0x0477539e in KMMainWidget::folderSelected (this=0x9de8f20, aFolder=0x9d39130, forceJumpToUnread=false, preferNewTabForOpening=<value optimized out>) at ../../kmail/kmmainwidget.cpp:2974
#15 0x04775504 in KMMainWidget::slotFolderViewManagerFolderActivated (this=0x9de8f20, fld=0x9d39130, middleClick=<value optimized out>) at ../../kmail/kmmainwidget.cpp:2837
#16 0x0477662e in KMMainWidget::qt_metacall (this=0x9de8f20, _c=QMetaObject::InvokeMetaMethod, _id=162, _a=0xbfa24dc4) at ./kmmainwidget.moc:518
#17 0x024fbe5a in QMetaObject::metacall (object=0x9de8f20, cl=3941280, idx=189, argv=0xbfa24dc4) at kernel/qmetaobject.cpp:237
#18 0x0250a5f5 in QMetaObject::activate (sender=0x9c05958, m=0x4b1a038, local_signal_index=1, argv=0xbfa24dc4) at kernel/qobject.cpp:3293
#19 0x044ec45f in KMail::FolderViewManager::folderActivated (this=0x9c05958, _t1=0x9d39130, _t2=false) at ./folderview.moc:95
#20 0x044f7a06 in KMail::FolderView::activateItemInternal (this=0x9e52008, fvi=0x9ee4d50, keepSelection=false, notifyManager=true, middleButton=<value optimized out>)
    at ../../kmail/folderview.cpp:1016
#21 0x044ec003 in KMail::FolderView::activateItem (this=0x9e52008, fvi=0x9ee4d50, keepSelection=<value optimized out>, middleButton=<value optimized out>) at ../../kmail/folderview.cpp:993
#22 0x044ed319 in KMail::FolderView::slotItemClicked (this=0x9e52008, item=0x9ee4d58, column=0) at ../../kmail/folderview.cpp:528
#23 0x044f8525 in KMail::FolderView::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=134, _a=0xbfa24fe4) at ./folderview.moc:219
#24 0x044fceea in KMail::MainFolderView::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=134, _a=0xbfa24fe4) at ./mainfolderview.moc:70
#25 0x024fbe5a in QMetaObject::metacall (object=0x9e52008, cl=3941280, idx=134, argv=0xbfa24fe4) at kernel/qmetaobject.cpp:237
#26 0x0250a5f5 in QMetaObject::activate (sender=0x9e52008, m=0x2118510, local_signal_index=1, argv=0xbfa24fe4) at kernel/qobject.cpp:3293
#27 0x01e029c9 in QTreeWidget::itemClicked (this=0x9e52008, _t1=0x9ee4d58, _t2=0) at .moc/release-shared/moc_qtreewidget.cpp:207
#28 0x01e05272 in QTreeWidgetPrivate::_q_emitItemClicked (this=0x9e521f8, index=...) at itemviews/qtreewidget.cpp:2236
#29 0x01e0f001 in QTreeWidget::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=16, _a=0xbfa25248) at .moc/release-shared/moc_qtreewidget.cpp:150
#30 0x0075a9fa in KPIM::TreeWidget::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=104, _a=0xbfa25248) at moc_treewidget.cpp:74
#31 0x007db19a in KPIM::FolderTreeWidget::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=104, _a=0xbfa25248) at ./foldertreewidget.moc:74
#32 0x044f835a in KMail::FolderView::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=104, _a=0xbfa25248) at ./folderview.moc:200
#33 0x044fceea in KMail::MainFolderView::qt_metacall (this=0x9e52008, _c=QMetaObject::InvokeMetaMethod, _id=104, _a=0xbfa25248) at ./mainfolderview.moc:70
#34 0x024fbe5a in QMetaObject::metacall (object=0x9e52008, cl=3941280, idx=104, argv=0xbfa25248) at kernel/qmetaobject.cpp:237
#35 0x0250a5f5 in QMetaObject::activate (sender=0x9e52008, m=0x2117164, local_signal_index=1, argv=0xbfa25248) at kernel/qobject.cpp:3293
#36 0x01d7b743 in QAbstractItemView::clicked (this=0x9e52008, _t1=...) at .moc/release-shared/moc_qabstractitemview.cpp:331
#37 0x01d8942a in QAbstractItemView::mouseReleaseEvent (this=0x9e52008, event=0xbfa25c60) at itemviews/qabstractitemview.cpp:1780
#38 0x01dd20dc in QTreeView::mouseReleaseEvent (this=0x9e52008, event=0xbfa25c60) at itemviews/qtreeview.cpp:1820
#39 0x044edc2e in KMail::FolderView::mouseReleaseEvent (this=0x9e52008, e=0xbfa25c60) at ../../kmail/folderview.cpp:933
#40 0x01841718 in QWidget::event (this=0x9e52008, event=0xbfa25c60) at kernel/qwidget.cpp:7998
#41 0x01c3d6a3 in QFrame::event (this=0x9e52008, e=0xbfa25c60) at widgets/qframe.cpp:557
#42 0x01cd7922 in QAbstractScrollArea::viewportEvent (this=0x3c23a0, e=0xd994788) at widgets/qabstractscrollarea.cpp:1036
#43 0x01d8c297 in QAbstractItemView::viewportEvent (this=0x9e52008, event=0xbfa25c60) at itemviews/qabstractitemview.cpp:1610
#44 0x01dcb96c in QTreeView::viewportEvent (this=0x9e52008, event=0xbfa25c60) at itemviews/qtreeview.cpp:1248
#45 0x01cda215 in QAbstractScrollAreaPrivate::viewportEvent (this=0x9e53528, o=0x9e525f0, e=0xbfa25c60) at widgets/qabstractscrollarea_p.h:100
#46 QAbstractScrollAreaFilter::eventFilter (this=0x9e53528, o=0x9e525f0, e=0xbfa25c60) at widgets/qabstractscrollarea_p.h:116
#47 0x024f5e8a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9751338, receiver=0x9e525f0, event=0xbfa25c60) at kernel/qcoreapplication.cpp:819
#48 0x017e33a9 in QApplicationPrivate::notify_helper (this=0x9751338, receiver=0x9e525f0, e=0xbfa25c60) at kernel/qapplication.cpp:4296
#49 0x017ea9b7 in QApplication::notify (this=0xbfa26354, receiver=0x9e525f0, e=0xbfa25c60) at kernel/qapplication.cpp:3865
#50 0x00d3d5ba in KApplication::notify (this=0xbfa26354, receiver=0x9e525f0, event=0xbfa25c60) at ../../kdeui/kernel/kapplication.cpp:302
#51 0x024f6beb in QCoreApplication::notifyInternal (this=0xbfa26354, receiver=0x9e525f0, event=0xbfa25c60) at kernel/qcoreapplication.cpp:704
#52 0x017e990f in QCoreApplication::sendEvent (receiver=0x9e525f0, event=0xbfa25c60, alienWidget=0x9e525f0, nativeWidget=0x9efb940, buttonDown=0x2126058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#53 QApplicationPrivate::sendMouseEvent (receiver=0x9e525f0, event=0xbfa25c60, alienWidget=0x9e525f0, nativeWidget=0x9efb940, buttonDown=0x2126058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#54 0x01874cc8 in QETWidget::translateMouseEvent (this=0x9efb940, event=0xbfa2617c) at kernel/qapplication_x11.cpp:4368
#55 0x018741a1 in QApplication::x11ProcessEvent (this=0xbfa26354, event=0xbfa2617c) at kernel/qapplication_x11.cpp:3379
#56 0x018a3a89 in QEventDispatcherX11::processEvents (this=0x9727680, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#57 0x024f5209 in QEventLoop::processEvents (this=0xbfa262b4, flags=) at kernel/qeventloop.cpp:149
#58 0x024f565a in QEventLoop::exec (this=0xbfa262b4, flags=...) at kernel/qeventloop.cpp:201
#59 0x024f984f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#60 0x017e3467 in QApplication::exec () at kernel/qapplication.cpp:3579
#61 0x0804b4c2 in main (argc=1, argv=0xbfa26574) at ../../../kontact/src/main.cpp:224

Reported using DrKonqi