Application that crashed: kmail
Version of the application: 1.12.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.22.19-laptop-2mdv x86_64
Distribution: Debian GNU/Linux unstable (sid)

What I was doing when the application crashed:
This crash certainly requires a slow (as in "takes 5 seconds to move a mail") server. Some latency helps.
- Use a "connected imap" account
- Move a first [bunch of] mail
- Quickly, move another [bunch of] mail, from the same folder, and to a different folder

You should get a crash as soon as dropping the second [bunch of] mail in the second folder.
Annoying as hell, especially on high latency servers, as it prevents "pipelining" actions and forces the user to wait.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#5  QList (this=0x5500000052) at /usr/include/qt4/QtCore/qlist.h:111
#6  KMail::FolderJob::msgList (this=0x5500000052) at ../../kmail/folderjob.cpp:120
#7  0x00002ba7dc868644 in KMAcctImap::ignoreJobsForMessage (this=0x658ff0, msg=0x42760a0) at ../../kmail/kmacctimap.cpp:215
#8  0x00002ba7dc982abf in KMMoveCommand::execute (this=0x3949520) at ../../kmail/kmcommands.cpp:2084
#9  0x00002ba7dc968e62 in KMCommand::slotPostTransfer (this=0x3949520, result=KMCommand::OK) at ../../kmail/kmcommands.cpp:273
#10 0x00002ba7dc972a06 in KMCommand::qt_metacall (this=0x3949520, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffcf17f790) at ./kmcommands.moc:87
#11 0x00002ba7dc9846b5 in KMMoveCommand::qt_metacall (this=0x7fffcf17f340, _c=82, _id=69006672, _a=0x4613640) at ./kmcommands.moc:1706
#12 0x00002ba7dd45f682 in QMetaObject::activate (sender=0x3949520, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x4613640) at kernel/qobject.cpp:3112
#13 0x00002ba7dc96609e in KMCommand::messagesTransfered (this=0x7fffcf17f340, _t1=KMCommand::OK) at ./kmcommands.moc:102
#14 0x00002ba7dc981508 in KMCommand::transferSelectedMsgs (this=0x3949520) at ../../kmail/kmcommands.cpp:367
#15 0x00002ba7dc981726 in KMCommand::slotStart (this=0x3949520) at ../../kmail/kmcommands.cpp:265
#16 0x00002ba7dc972a1a in KMCommand::qt_metacall (this=0x3949520, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffcf17f9f0) at ./kmcommands.moc:86
#17 0x00002ba7dc9846b5 in KMMoveCommand::qt_metacall (this=0x7fffcf17f340, _c=82, _id=69006672, _a=0x4613640) at ./kmcommands.moc:1706
#18 0x00002ba7dd45f682 in QMetaObject::activate (sender=0x1ae6780, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x4613640) at kernel/qobject.cpp:3112
#19 0x00002ba7dd4647ef in QSingleShotTimer::timerEvent (this=0x1ae6780) at kernel/qtimer.cpp:298
#20 0x00002ba7dd459bf3 in QObject::event (this=0x1ae6780, e=0x5500000052) at kernel/qobject.cpp:1074
#21 0x00002ba7dd91780d in QApplicationPrivate::notify_helper (this=0x636960, receiver=0x1ae6780, e=0x7fffcf1800b0) at kernel/qapplication.cpp:4056
#22 0x00002ba7dd91f86a in QApplication::notify (this=0x7fffcf180510, receiver=0x1ae6780, e=0x7fffcf1800b0) at kernel/qapplication.cpp:4021
#23 0x00002ba7dbd69b2b in KApplication::notify (this=0x7fffcf180510, receiver=0x1ae6780, event=0x7fffcf1800b0) at ../../kdeui/kernel/kapplication.cpp:302
#24 0x00002ba7dd44a51c in QCoreApplication::notifyInternal (this=0x7fffcf180510, receiver=0x1ae6780, event=0x7fffcf1800b0) at kernel/qcoreapplication.cpp:610
#25 0x00002ba7dd476826 in QCoreApplication::sendEvent (this=0x638c60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#26 QTimerInfoList::activateTimers (this=0x638c60) at kernel/qeventdispatcher_unix.cpp:572
#27 0x00002ba7dd472c9d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#28 0x00002ba7e61147aa in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#29 0x00002ba7e6117df8 in ?? () from /usr/lib/libglib-2.0.so.0
#30 0x00002ba7e6117fac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#31 0x00002ba7dd472bff in QEventDispatcherGlib::processEvents (this=0x636b00, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00002ba7dd9ae64f in QGuiEventDispatcherGlib::processEvents (this=0x7fffcf17f340, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00002ba7dd448de2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#34 0x00002ba7dd4491b4 in QEventLoop::exec (this=0x7fffcf180360, flags=...) at kernel/qeventloop.cpp:201
#35 0x00002ba7dd44b424 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x0000000000402fab in main (argc=<value optimized out>, argv=<value optimized out>) at ../../kmail/main.cpp:146

This bug may be a duplicate of or related to bug 195870

Reported using DrKonqi