Application that crashed: kmail
Version of the application: 1.12.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
KMail segfaults sometimes when deleting mail in an IMAP folder. It is not entirely reproducable.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  0x012b543d in ?? () from /usr/lib/libkmailprivate.so.4
#7  0x0113f6dd in ?? () from /usr/lib/libkmailprivate.so.4
#8  0x01156a63 in ?? () from /usr/lib/libkmailprivate.so.4
#9  0x0127135c in KMMoveCommand::execute() () from /usr/lib/libkmailprivate.so.4
#10 0x01255ba2 in KMCommand::slotPostTransfer(KMCommand::Result) () from /usr/lib/libkmailprivate.so.4
#11 0x0126015f in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#12 0x012725fa in KMMoveCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#13 0x012726c2 in KMTrashMsgCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#14 0x00a57263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x00a57ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x01251bd3 in KMCommand::messagesTransfered(KMCommand::Result) () from /usr/lib/libkmailprivate.so.4
#17 0x0126f156 in KMCommand::transferSelectedMsgs() () from /usr/lib/libkmailprivate.so.4
#18 0x0126f3a2 in KMCommand::slotStart() () from /usr/lib/libkmailprivate.so.4
#19 0x0126013b in KMCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#20 0x012725fa in KMMoveCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#21 0x012726c2 in KMTrashMsgCommand::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#22 0x00a57263 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#23 0x00a57ec2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#24 0x00a5c387 in ?? () from /usr/lib/libQtCore.so.4
#25 0x00a5c49c in ?? () from /usr/lib/libQtCore.so.4
#26 0x00a513bf in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#27 0x0521af54 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#28 0x0522267c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#29 0x004fabfa in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#30 0x00a416cb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#31 0x00a6e7ce in ?? () from /usr/lib/libQtCore.so.4
#32 0x00a6c0e0 in ?? () from /usr/lib/libQtCore.so.4
#33 0x03f0de88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#34 0x03f11730 in ?? () from /lib/libglib-2.0.so.0
#35 0x03f11863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#36 0x00a6c02c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x052bbbe5 in ?? () from /usr/lib/libQtGui.so.4
#38 0x00a3fc79 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0x00a400ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0x00a4253f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#41 0x0521add7 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#42 0x0804a702 in _start ()

Reported using DrKonqi