Application: kontact (4.4.3)
KDE Platform Version: 4.4.4 (KDE 4.4.4)
Qt Version: 4.6.3
Operating System: Linux 2.6.34-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
My IMAP account's outbox folder states that it has four unread mails on every mail fetch although there are none. When opening the preferences dialog for the folder and clicking "OK" (no matter if I actually changed any settings or not, KMail segfaults. This only happens with this specific folder.

The crash can be reproduced every time.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f69274664b3 in QLineEdit::text() const () from /usr/lib/libQtGui.so.4
#6  0x00007f69111a0851 in KMail::FolderDialogGeneralTab::save() () from /usr/lib/libkmailprivate.so.4
#7  0x00007f69111a884d in KMail::FolderDialogTab::accept() () from /usr/lib/libkmailprivate.so.4
#8  0x00007f69111a7d40 in KMFolderDialog::slotOk() () from /usr/lib/libkmailprivate.so.4
#9  0x00007f69111a13ed in KMFolderDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#10 0x00007f6927c8bd9f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#11 0x00007f69285906b8 in KDialog::slotButtonClicked(int) () from /usr/lib/libkdeui.so.5
#12 0x00007f6928590aa2 in KDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#13 0x00007f6928644280 in KPageDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#14 0x00007f69111a13c8 in KMFolderDialog::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#15 0x00007f6927c8bd9f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x00007f6927c8ed7e in QSignalMapper::mapped(int) () from /usr/lib/libQtCore.so.4
#17 0x00007f6927c8ee86 in QSignalMapper::map(QObject*) () from /usr/lib/libQtCore.so.4
#18 0x00007f6927c8f5c0 in QSignalMapper::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#19 0x00007f6927c8bd9f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#20 0x00007f69276c4b92 in QAbstractButton::clicked(bool) () from /usr/lib/libQtGui.so.4
#21 0x00007f6927416c2b in ?? () from /usr/lib/libQtGui.so.4
#22 0x00007f6927417fdb in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f692741824c in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007f69270c0292 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007f6927070854 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x00007f69270751ba in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x00007f692860ef66 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x00007f6927c77d3c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0x00007f69270717a5 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#30 0x00007f69270ec3c8 in ?? () from /usr/lib/libQtGui.so.4
#31 0x00007f69270eadc9 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#32 0x00007f69271106b2 in ?? () from /usr/lib/libQtGui.so.4
#33 0x00007f691f785b33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0x00007f691f786310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#35 0x00007f691f7865ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0x00007f6927ca082f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007f692711037e in ?? () from /usr/lib/libQtGui.so.4
#38 0x00007f6927c77122 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0x00007f6927c7735c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0x00007f692751232e in QDialog::exec() () from /usr/lib/libQtGui.so.4
#41 0x00007f69113c3346 in KMMainWidget::slotModifyFolder(KMMainWidget::PropsPage) () from /usr/lib/libkmailprivate.so.4
#42 0x00007f69113d8d42 in KMMainWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#43 0x00007f6927c8bd9f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#44 0x00007f6927069f92 in QAction::triggered(bool) () from /usr/lib/libQtGui.so.4
#45 0x00007f692706a18a in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQtGui.so.4
#46 0x00007f6927492273 in ?? () from /usr/lib/libQtGui.so.4
#47 0x00007f692749828a in ?? () from /usr/lib/libQtGui.so.4
#48 0x00007f69286dba0d in KMenu::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libkdeui.so.5
#49 0x00007f69270c0292 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#50 0x00007f69274994db in QMenu::event(QEvent*) () from /usr/lib/libQtGui.so.4
#51 0x00007f6927070854 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#52 0x00007f69270751ba in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#53 0x00007f692860ef66 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#54 0x00007f6927c77d3c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#55 0x00007f69270717a5 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#56 0x00007f69270ec624 in ?? () from /usr/lib/libQtGui.so.4
#57 0x00007f69270eadc9 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#58 0x00007f69271106b2 in ?? () from /usr/lib/libQtGui.so.4
#59 0x00007f691f785b33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#60 0x00007f691f786310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#61 0x00007f691f7865ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#62 0x00007f6927ca082f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#63 0x00007f692711037e in ?? () from /usr/lib/libQtGui.so.4
#64 0x00007f6927c77122 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#65 0x00007f6927c7735c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#66 0x00007f6927495995 in QMenu::exec(QPoint const&, QAction*) () from /usr/lib/libQtGui.so.4
#67 0x00007f69111b464a in KMail::FolderView::contextMenuEvent(QContextMenuEvent*) () from /usr/lib/libkmailprivate.so.4
#68 0x00007f69270bffe3 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#69 0x00007f6927458e66 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#70 0x00007f6927565403 in QAbstractItemView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#71 0x00007f69275a9852 in QTreeView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#72 0x00007f6927c77ec7 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#73 0x00007f6927070821 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#74 0x00007f6927074afb in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#75 0x00007f692860ef66 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#76 0x00007f6927c77d3c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#77 0x00007f69270ec42b in ?? () from /usr/lib/libQtGui.so.4
#78 0x00007f69270eadc9 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#79 0x00007f69271106b2 in ?? () from /usr/lib/libQtGui.so.4
#80 0x00007f691f785b33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#81 0x00007f691f786310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#82 0x00007f691f7865ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#83 0x00007f6927ca082f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#84 0x00007f692711037e in ?? () from /usr/lib/libQtGui.so.4
#85 0x00007f6927c77122 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#86 0x00007f6927c7735c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#87 0x00007f6927c7b76b in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#88 0x0000000000403e7e in _start ()

Reported using DrKonqi