Version:            (using KDE 4.2.4)
Compiler:          gcc version 4.4.0 20090526 (prerelease) (GCC) stock gcc from Arch linux
OS:                Linux
Installed from:    Compiled From Sources

I started up kmail, got 2 new messages in inbox. Seeing by subject they're spam, i clicked on the first one. It didn't appear right away in message preview pane, b/c my connection is slow. I didn't wait, pressed shift+left to select also the second, then pressed delete. Then kmail crashed with backtrace:

Application: KMail (kmail), signal SIGABRT
0x00007f618c810bc1 in nanosleep () from /lib/libc.so.6

Thread 1 (Thread 0x7f618f8bc760 (LWP 3450)):
[KCrash Handler]
#5  0x00007f618c7a52d5 in raise () from /lib/libc.so.6
#6  0x00007f618c7a673a in abort () from /lib/libc.so.6
#7  0x00007f618c7df4ad in __libc_message () from /lib/libc.so.6
#8  0x00007f618c7e4a76 in malloc_printerr () from /lib/libc.so.6
#9  0x00007f618c7e944c in free () from /lib/libc.so.6
#10 0x00007f618e702a9f in KMail::FolderJob::msgList (this=0xd7a) at /usr/include/QtCore/qlist.h:111
#11 0x00007f618e5c9e23 in KMAcctImap::ignoreJobsForMessage (this=0x1882590, msg=0x23e51a0) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/kmacctimap.cpp:215
#12 0x00007f618e6c21c7 in KMMoveCommand::execute (this=0x2ceb490) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/kmcommands.cpp:2096
#13 0x00007f618e6b0f5a in KMCommand::slotPostTransfer (this=0x2ceb490, result=KMCommand::OK) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/kmcommands.cpp:276
#14 0x00007f618e6bbc23 in KMCommand::qt_metacall (this=0x2ceb490, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4fdbb130)
    at /var/abs/local/kde/kdepim/src/build/kmail/kmcommands.moc:87
#15 0x00007f618e6bbed0 in KMMoveCommand::qt_metacall (this=0xd7a, _c=3450, _id=6, _a=0xffffffffffffffff) at /var/abs/local/kde/kdepim/src/build/kmail/kmcommands.moc:1706
#16 0x00007f618dd30f42 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0x00007f618e6addce in KMCommand::messagesTransfered (this=0xd7a, _t1=KMCommand::OK) at /var/abs/local/kde/kdepim/src/build/kmail/kmcommands.moc:102
#18 0x00007f618e6c2bc8 in KMCommand::transferSelectedMsgs (this=0x2ceb490) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/kmcommands.cpp:370
#19 0x00007f618e6c2d87 in KMCommand::slotStart (this=0x2ceb490) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/kmcommands.cpp:268
#20 0x00007f618e6bbc06 in KMCommand::qt_metacall (this=0x2ceb490, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff4fdbb340)
    at /var/abs/local/kde/kdepim/src/build/kmail/kmcommands.moc:86
#21 0x00007f618e6bbed0 in KMMoveCommand::qt_metacall (this=0xd7a, _c=3450, _id=6, _a=0xffffffffffffffff) at /var/abs/local/kde/kdepim/src/build/kmail/kmcommands.moc:1706
#22 0x00007f618dd30f42 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#23 0x00007f618dd3600f in ?? () from /usr/lib/libQtCore.so.4
#24 0x00007f618dd2acb3 in QObject::event () from /usr/lib/libQtCore.so.4
#25 0x00007f618d18bbfc in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#26 0x00007f618d192eae in QApplication::notify () from /usr/lib/libQtGui.so.4
#27 0x00007f618f30d2a6 in KApplication::notify (this=0x7fff4fdbbda0, receiver=0x1fb24c0, event=0x7fff4fdbb950) at /var/abs/local/kde/kdelibs/src/kdelibs-4.2.4/kdeui/kernel/kapplication.cpp:307
#28 0x00007f618dd1b5cc in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#29 0x00007f618dd47892 in ?? () from /usr/lib/libQtCore.so.4
#30 0x00007f618dd448ed in ?? () from /usr/lib/libQtCore.so.4
#31 0x00007f6185272dee in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0x00007f61852764b8 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#33 0x00007f61852765e0 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#34 0x00007f618dd44836 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#35 0x00007f618d22035e in ?? () from /usr/lib/libQtGui.so.4
#36 0x00007f618dd19ea2 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#37 0x00007f618dd1a274 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#38 0x00007f618dd1c369 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#39 0x0000000000402c89 in main (argc=<value optimized out>, argv=<value optimized out>) at /var/abs/local/kde/kdepim/src/kdepim-4.2.4/kmail/main.cpp:146