Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.30-9-generic x86_64
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
I changed properties on 2 different DIMAP folders.  Then I selected about 20 folders from a single DIMAP account and right clicked.  I was hoping to set the identity for them all in one go.  Kontact crashed immediately.  It was also syncing at the time, so this may be related.

Bug 180101 mentions changing properties on DIMAP folders as well, but the stacktraces are very different.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007feb0b82126e in KMFolderCachedImap::findByUID (this=0x2f16df0, uid=15) at ../../kmail/kmfoldercachedimap.cpp:691
#6  0x00007feb0b8399d1 in KMFolderCachedImap::slotGetMessagesData (this=0x2f16df0, job=<value optimized out>, data=<value optimized out>) at ../../kmail/kmfoldercachedimap.cpp:1862
#7  0x00007feb0b83a477 in KMFolderCachedImap::qt_metacall (this=0x2f16df0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffce9d9f00) at ./kmfoldercachedimap.moc:201
#8  0x00007feb20f8274c in QMetaObject::activate (sender=0x309bb90, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3120
#9  0x00007feb1f3e82d4 in KIO::TransferJob::data (this=0x2f16df0, _t1=0x309bb90, _t2=<value optimized out>) at ./jobclasses.moc:364
#10 0x00007feb1f3edba6 in KIO::TransferJob::qt_metacall (this=0x309bb90, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffce9da040) at ./jobclasses.moc:344
#11 0x00007feb20f8274c in QMetaObject::activate (sender=0x21cc450, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3120
#12 0x00007feb1f4aafa2 in KIO::SlaveInterface::data (this=0x2f16df0, _t1=<value optimized out>) at ./slaveinterface.moc:140
#13 0x00007feb1f4ae9e8 in KIO::SlaveInterface::dispatch (this=0x21cc450, _cmd=100, rawdata=@0x7fffce9da260) at ../../kio/kio/slaveinterface.cpp:163
#14 0x00007feb1f4ab263 in KIO::SlaveInterface::dispatch (this=0x21cc450) at ../../kio/kio/slaveinterface.cpp:91
#15 0x00007feb1f49e322 in KIO::Slave::gotInput (this=0x21cc450) at ../../kio/kio/slave.cpp:322
#16 0x00007feb1f4a032c in KIO::Slave::qt_metacall (this=0x21cc450, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffce9da3d0) at ./slave.moc:76
#17 0x00007feb20f8274c in QMetaObject::activate (sender=0x19b43c0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3120
#18 0x00007feb1f3bd087 in KIO::ConnectionPrivate::dequeue (this=0x19b59c0) at ../../kio/kio/connection.cpp:82
#19 0x00007feb1f3bd1ad in KIO::Connection::qt_metacall (this=0x19b43c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x1e95020) at ./connection.moc:73
#20 0x00007feb20f7c999 in QObject::event (this=0x19b43c0, e=0x449f730) at kernel/qobject.cpp:1118
#21 0x00007feb2188427c in QApplicationPrivate::notify_helper (this=0xbae3b0, receiver=0x19b43c0, e=0x449f730) at kernel/qapplication.cpp:4057
#22 0x00007feb2188b54e in QApplication::notify (this=0x7fffce9dd800, receiver=0x19b43c0, e=0x449f730) at kernel/qapplication.cpp:4022
#23 0x00007feb224e1c16 in KApplication::notify (this=0x7fffce9dd800, receiver=0x19b43c0, event=0x449f730) at ../../kdeui/kernel/kapplication.cpp:302
#24 0x00007feb20f6d20c in QCoreApplication::notifyInternal (this=0x7fffce9dd800, receiver=0x19b43c0, event=0x449f730) at kernel/qcoreapplication.cpp:610
#25 0x00007feb20f6dcdc in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0xb77c60)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#26 0x00007feb20f95ef3 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#27 0x00007feb1ad828fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0x00007feb1ad85fd8 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0x00007feb1ad86100 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0x00007feb20f95b66 in QEventDispatcherGlib::processEvents (this=0xb77850, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#31 0x00007feb2191855e in QGuiEventDispatcherGlib::processEvents (this=0x2f16df0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00007feb20f6bb12 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#33 0x00007feb20f6bee4 in QEventLoop::exec (this=0x7fffce9dacd0, flags=) at kernel/qeventloop.cpp:200
#34 0x00007feb21ca1425 in QMenu::exec (this=0x1479380, p=<value optimized out>, action=0x0) at widgets/qmenu.cpp:1993
#35 0x00007feb0b6f0cea in KMail::FolderView::contextMenuEvent (this=0x1a75260, e=0x7fffce9db8b0) at ../../kmail/folderview.cpp:1657
#36 0x00007feb218d31a5 in QWidget::event (this=0x1a75260, event=0x7fffce9db8b0) at kernel/qwidget.cpp:7680
#37 0x00007feb21c5b2c6 in QFrame::event (this=0x1a75260, e=0x7fffce9db8b0) at widgets/qframe.cpp:559
#38 0x00007feb21d8cbfb in QAbstractItemView::viewportEvent (this=0x1a75260, event=0x7fffce9db8b0) at itemviews/qabstractitemview.cpp:1471
#39 0x00007feb21dc2db0 in QTreeView::viewportEvent (this=0x1a75260, event=0x7fffce9db8b0) at itemviews/qtreeview.cpp:1264
#40 0x00007feb20f6c527 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x1a6b790, event=0x7fffce9db8b0) at kernel/qcoreapplication.cpp:726
#41 0x00007feb2188424c in QApplicationPrivate::notify_helper (this=0xbae3b0, receiver=0x1a6b790, e=0x7fffce9db8b0) at kernel/qapplication.cpp:4053
#42 0x00007feb2188b8a7 in QApplication::notify (this=0x7fffce9dd800, receiver=0x1a6b790, e=0x7fffce9db8b0) at kernel/qapplication.cpp:3846
#43 0x00007feb224e1c16 in KApplication::notify (this=0x7fffce9dd800, receiver=0x1a6b790, event=0x7fffce9db8b0) at ../../kdeui/kernel/kapplication.cpp:302
#44 0x00007feb20f6d20c in QCoreApplication::notifyInternal (this=0x7fffce9dd800, receiver=0x1a6b790, event=0x7fffce9db8b0) at kernel/qcoreapplication.cpp:610
#45 0x00007feb218f117e in QETWidget::translateMouseEvent (this=<value optimized out>, event=<value optimized out>) at kernel/qapplication_x11.cpp:4454
#46 0x00007feb218efc7a in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffce9dd410) at kernel/qapplication_x11.cpp:3566
#47 0x00007feb21918dac in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#48 0x00007feb1ad828fe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#49 0x00007feb1ad85fd8 in ?? () from /usr/lib/libglib-2.0.so.0
#50 0x00007feb1ad86100 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#51 0x00007feb20f95b66 in QEventDispatcherGlib::processEvents (this=0xb77850, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#52 0x00007feb2191855e in QGuiEventDispatcherGlib::processEvents (this=0x2f16df0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#53 0x00007feb20f6bb12 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#54 0x00007feb20f6bee4 in QEventLoop::exec (this=0x7fffce9dd740, flags=) at kernel/qeventloop.cpp:200
#55 0x00007feb20f6df89 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#56 0x0000000000403f27 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi