Application: kontact (4.4.3)
KDE Platform Version: 4.4.3 (KDE 4.4.3)
Qt Version: 4.6.2
Operating System: Linux 2.6.33-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
Having moved a message or two already to the same location, moving another mesage to a folder on IMAP crashed KMail and Kontact. I'd not long before "Appl[ied] all filters" on the message alone, though it shouldn't have matched any filters. The move was successful in spite of the almost instant crash.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4ab0fda760 (LWP 2387))]

Thread 3 (Thread 0x7f4a8bfff710 (LWP 2411)):
#0  0x00007f4aae1288d3 in select () from /lib/libc.so.6
#1  0x00007f4aaf4a565d in ?? () from /usr/lib/libQtCore.so.4
#2  0x00007f4aaf3d55a5 in ?? () from /usr/lib/libQtCore.so.4
#3  0x00007f4aa9e6c97a in start_thread () from /lib/libpthread.so.0
#4  0x00007f4aae12f01d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4a8b3f8710 (LWP 2419)):
#0  0x00007f4aa9e7116c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f4aaf3d656b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f4a989a58be in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007f4a989a7bd3 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007f4a989a6acf in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007f4a989a6b58 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f4aaf3d55a5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f4aa9e6c97a in start_thread () from /lib/libpthread.so.0
#8  0x00007f4aae12f01d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4ab0fda760 (LWP 2387)):
[KCrash Handler]
#5  0x00007f4aae0e081b in memcpy () from /lib/libc.so.6
#6  0x00007f4a98cbf464 in node_copy (this=0x7fff3a05e860) at /usr/include/QtCore/qlist.h:394
#7  QList<KMMessage*>::detach_helper (this=0x7fff3a05e860) at /usr/include/QtCore/qlist.h:606
#8  0x00007f4a98f3e147 in QList (this=<value optimized out>) at /usr/include/QtCore/qlist.h:114
#9  KMail::FolderJob::msgList (this=<value optimized out>) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/folderjob.cpp:120
#10 0x00007f4a98df9923 in KMAcctImap::ignoreJobsForMessage (this=0x10b05a0, msg=0x2737940) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmacctimap.cpp:217
#11 0x00007f4a98f08007 in KMMoveCommand::execute (this=0x28840c0) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.cpp:2200
#12 0x00007f4a98efe52a in KMCommand::slotPostTransfer (this=0x28840c0, result=KMCommand::OK) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.cpp:291
#13 0x00007f4a98f02ea3 in KMCommand::qt_metacall (this=0x28840c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff3a05ec70)
    at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.moc:93
#14 0x00007f4a98f07910 in KMMoveCommand::qt_metacall (this=0x28840c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff3a05ec70)
    at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.moc:1971
#15 0x00007f4aaf4dca8f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x00007f4a98ef283e in KMCommand::messagesTransfered (this=<value optimized out>, _t1=KMCommand::OK) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.moc:108
#17 0x00007f4a98efb57c in KMCommand::transferSelectedMsgs (this=0x28840c0) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.cpp:389
#18 0x00007f4a98effb58 in KMCommand::slotStart (this=0x28840c0) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.cpp:283
#19 0x00007f4a98f02e86 in KMCommand::qt_metacall (this=0x28840c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff3a05eed0)
    at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.moc:92
#20 0x00007f4a98f07910 in KMMoveCommand::qt_metacall (this=0x28840c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff3a05eed0)
    at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kmail/kmcommands.moc:1971
#21 0x00007f4aaf4dca8f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x00007f4aaf4e42ff in ?? () from /usr/lib/libQtCore.so.4
#23 0x00007f4aaf4d96b3 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#24 0x00007f4aae88598c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007f4aae88be5b in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x00007f4aafe78ed6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#27 0x00007f4aaf4c9d5c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#28 0x00007f4aaf4f69b2 in ?? () from /usr/lib/libQtCore.so.4
#29 0x00007f4aaf4f34c4 in ?? () from /usr/lib/libQtCore.so.4
#30 0x00007f4aa6eefb33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007f4aa6ef0310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#32 0x00007f4aa6ef05ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007f4aaf4f31b3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007f4aae93453e in ?? () from /usr/lib/libQtGui.so.4
#35 0x00007f4aaf4c8682 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00007f4aaf4c8a5c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007f4aaf4cc79b in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x00000000004041ae in main (argc=1, argv=0x7fff3a05ff48) at /home/phil/kdemod/core/kdepim/src/kdepim-4.4.3/kontact/src/main.cpp:224

Reported using DrKonqi