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 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I clicked the close button on a message and KMail crashed immediately. I have not seen this happen before.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  0x011476fb in QListData::begin (this=0x85a2560, msg=0x95ff138) at ./kmacctimap.moc:96
#7  QList<KMMessage*>::begin (this=0x85a2560, msg=0x95ff138) at /usr/include/qt4/QtCore/qlist.h:237
#8  QList<KMMessage*>::first (this=0x85a2560, msg=0x95ff138) at /usr/include/qt4/QtCore/qlist.h:252
#9  KMAcctImap::ignoreJobsForMessage (this=0x85a2560, msg=0x95ff138) at ../../kmail/kmacctimap.cpp:215
#10 0x0115ea63 in KMFolderImap::ignoreJobsForMessage (this=0x8531148, msg=0x95ff138) at ../../kmail/kmfolderimap.cpp:1564
#11 0x0127935c in KMMoveCommand::execute (this=0x94e1ec8) at ../../kmail/kmcommands.cpp:2095
#12 0x0125dba2 in KMCommand::slotPostTransfer (this=0x94e1ec8, result=KMCommand::OK) at ../../kmail/kmcommands.cpp:274
#13 0x0126815f in KMCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbfb5c728) at ./kmcommands.moc:87
#14 0x0127a5fa in KMMoveCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbfb5c728) at ./kmcommands.moc:1706
#15 0x0127a6c2 in KMTrashMsgCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbfb5c728) at ./kmcommands.moc:1758
#16 0x004ad263 in QMetaObject::activate (sender=0x94e1ec8, from_signal_index=4, to_signal_index=4, argv=0xbfb5c728) at kernel/qobject.cpp:3113
#17 0x004adec2 in QMetaObject::activate (sender=0x94e1ec8, m=0x1696634, local_signal_index=0, argv=0xbfb5c728) at kernel/qobject.cpp:3187
#18 0x01259bd3 in KMCommand::messagesTransfered (this=0x94e1ec8, _t1=KMCommand::OK) at ./kmcommands.moc:102
#19 0x01277156 in KMCommand::transferSelectedMsgs (this=0x94e1ec8) at ../../kmail/kmcommands.cpp:368
#20 0x012773a2 in KMCommand::slotStart (this=0x94e1ec8) at ../../kmail/kmcommands.cpp:266
#21 0x0126813b in KMCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfb5c94c) at ./kmcommands.moc:86
#22 0x0127a5fa in KMMoveCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfb5c94c) at ./kmcommands.moc:1706
#23 0x0127a6c2 in KMTrashMsgCommand::qt_metacall (this=0x94e1ec8, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xbfb5c94c) at ./kmcommands.moc:1758
#24 0x004ad263 in QMetaObject::activate (sender=0x9726fa8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#25 0x004adec2 in QMetaObject::activate (sender=0x9726fa8, m=0x587908, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#26 0x004b2387 in QSingleShotTimer::timeout (this=0x9726fa8) at .moc/release-shared/qtimer.moc:76
#27 0x004b249c in QSingleShotTimer::timerEvent (this=0x9726fa8) at kernel/qtimer.cpp:298
#28 0x004a73bf in QObject::event (this=0x9726fa8, e=0xbfb5cde0) at kernel/qobject.cpp:1075
#29 0x017c4f54 in QApplicationPrivate::notify_helper (this=0x83ef628, receiver=0x9726fa8, e=0xbfb5cde0) at kernel/qapplication.cpp:4056
#30 0x017cc67c in QApplication::notify (this=0xbfb5d1e0, receiver=0x9726fa8, e=0xbfb5cde0) at kernel/qapplication.cpp:3603
#31 0x00d3bbfa in KApplication::notify (this=0xbfb5d1e0, receiver=0x9726fa8, event=0xbfb5cde0) at ../../kdeui/kernel/kapplication.cpp:302
#32 0x004976cb in QCoreApplication::notifyInternal (this=0xbfb5d1e0, receiver=0x9726fa8, event=0xbfb5cde0) at kernel/qcoreapplication.cpp:610
#33 0x004c47ce in QCoreApplication::sendEvent (this=0x83dcd34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#34 QTimerInfoList::activateTimers (this=0x83dcd34) at kernel/qeventdispatcher_unix.cpp:572
#35 0x004c20e0 in timerSourceDispatch (source=0x83dcd00) at kernel/qeventdispatcher_glib.cpp:165
#36 0x03014e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#37 0x03018730 in ?? () from /lib/libglib-2.0.so.0
#38 0x03018863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#39 0x004c202c in QEventDispatcherGlib::processEvents (this=0x83b3180, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#40 0x01865be5 in QGuiEventDispatcherGlib::processEvents (this=0x83b3180, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#41 0x00495c79 in QEventLoop::processEvents (this=0xbfb5d0a4, flags=) at kernel/qeventloop.cpp:149
#42 0x004960ca in QEventLoop::exec (this=0xbfb5d0a4, flags=...) at kernel/qeventloop.cpp:201
#43 0x0049853f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#44 0x017c4dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#45 0x0804a702 in main (argc=3, argv=0xbfb5d394) at ../../kmail/main.cpp:146

Reported using DrKonqi