Application that crashed: kmail
Version of the application: 1.12.2
KDE Version: 4.3.1 (KDE 4.3.1) "release 6"
Qt Version: 4.5.3
Operating System: Linux 2.6.31.5-0.1-default x86_64

What I was doing when the application crashed:
kmail crashes when I delete attachments that have been viewed before using okular. The pdf files are OK.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f6e2ff44771 in KMTrashMsgCommand::KMTrashMsgCommand(unsigned int) () from /usr/lib64/libkmailprivate.so.4
#6  0x00007f6e2ff449e2 in AttachmentModifyCommand::messageStoreResult(KMFolderImap*, bool) () from /usr/lib64/libkmailprivate.so.4
#7  0x00007f6e2ff44c79 in AttachmentModifyCommand::storeChangedMessage(KMMessage*) () from /usr/lib64/libkmailprivate.so.4
#8  0x00007f6e2ff4545e in KMDeleteAttachmentCommand::doAttachmentModify() () from /usr/lib64/libkmailprivate.so.4
#9  0x00007f6e2ff4401b in AttachmentModifyCommand::execute() () from /usr/lib64/libkmailprivate.so.4
#10 0x00007f6e2ff269ba in KMCommand::slotPostTransfer(KMCommand::Result) () from /usr/lib64/libkmailprivate.so.4
#11 0x00007f6e2ff30b73 in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkmailprivate.so.4
#12 0x00007f6e2ff454a0 in AttachmentModifyCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkmailprivate.so.4
#13 0x00007f6e2f58efbc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#14 0x00007f6e2ff23b3e in KMCommand::messagesTransfered(KMCommand::Result) () from /usr/lib64/libkmailprivate.so.4
#15 0x00007f6e2ff3ecf8 in KMCommand::transferSelectedMsgs() () from /usr/lib64/libkmailprivate.so.4
#16 0x00007f6e2ff3ef1f in KMCommand::slotStart() () from /usr/lib64/libkmailprivate.so.4
#17 0x00007f6e2ff30b56 in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkmailprivate.so.4
#18 0x00007f6e2ff454a0 in AttachmentModifyCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libkmailprivate.so.4
#19 0x00007f6e2f58efbc in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#20 0x00007f6e2f593fff in ?? () from /usr/lib64/libQtCore.so.4
#21 0x00007f6e2f588f63 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#22 0x00007f6e2ea452ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#23 0x00007f6e2ea4c57e in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#24 0x00007f6e30bde8d6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#25 0x00007f6e2f579ddc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#26 0x00007f6e2f5a571d in ?? () from /usr/lib64/libQtCore.so.4
#27 0x00007f6e2f5a2678 in ?? () from /usr/lib64/libQtCore.so.4
#28 0x00007f6e26613dde in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#29 0x00007f6e266177a8 in ?? () from /usr/lib64/libglib-2.0.so.0
#30 0x00007f6e266178d0 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#31 0x00007f6e2f5a23a3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#32 0x00007f6e2ead831e in ?? () from /usr/lib64/libQtGui.so.4
#33 0x00007f6e2f578712 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#34 0x00007f6e2f578ae4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#35 0x00007f6e2f57ac99 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#36 0x0000000000402ff9 in _start ()

Reported using DrKonqi