Application: kmail (1.13.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
Kmail suddenly closed when I was deleting some directories on my IMAP account. Maybe I performed the task too quickly. 

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fdd06630da4 in KMFolder::isOpened (this=0x5c09e8a) at ../../kmail/kmfolder.cpp:563
#6  0x00007fdd06954a9d in KMail::MessageListView::StorageModel::slotFolderCleared (this=0x5c09e70) at ../../kmail/messagelistview/storagemodel.cpp:619
#7  0x00007fdd06562f24 in KMail::MessageListView::StorageModel::qt_metacall (this=0x5c09e70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd1b88e90) at moc_storagemodel.cpp:93
#8  0x00007fdd05114e3f in QMetaObject::activate (sender=0x1fc7860, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#9  0x00007fdd066367ea in KMFolder::qt_metacall (this=0x1fc7860, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd1b89000) at ./kmfolder.moc:124
#10 0x00007fdd05114e3f in QMetaObject::activate (sender=0x1f2d2d0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#11 0x00007fdd0665e0d2 in FolderStorage::closed (this=0x5c09e8a, _t1=0x1fc7860) at ./folderstorage.moc:191
#12 0x00007fdd06661643 in FolderStorage::remove (this=0x1f2d2d0) at ../../kmail/folderstorage.cpp:802
#13 0x00007fdd067093a1 in KMFolderImap::slotRemoveFolderResult (this=0x1f2d2d0, job=0x1847f70) at ../../kmail/kmfolderimap.cpp:265
#14 0x00007fdd067137c2 in KMFolderImap::qt_metacall (this=0x1f2d2d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd1b89280) at ./kmfolderimap.moc:195
#15 0x00007fdd05114e3f in QMetaObject::activate (sender=0x1847f70, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#16 0x00007fdd07106b82 in KJob::result (this=0x5c09e8a, _t1=0x1847f70) at ./kjob.moc:194
#17 0x00007fdd07106e20 in KJob::emitResult (this=0x1847f70) at ../../kdecore/jobs/kjob.cpp:312
#18 0x00007fdd019f8503 in KIO::SimpleJob::slotFinished (this=0x1847f70) at ../../kio/kio/job.cpp:486
#19 0x00007fdd019f67e1 in KIO::SimpleJob::qt_metacall (this=0x1847f70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd1b894b0) at ./jobclasses.moc:171
#20 0x00007fdd05114e3f in QMetaObject::activate (sender=0x295dca0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#21 0x00007fdd01ab8271 in KIO::SlaveInterface::dispatch (this=0x295dca0, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#22 0x00007fdd01ab55e3 in KIO::SlaveInterface::dispatch (this=0x295dca0) at ../../kio/kio/slaveinterface.cpp:91
#23 0x00007fdd01aa9a46 in KIO::Slave::gotInput (this=0x295dca0) at ../../kio/kio/slave.cpp:324
#24 0x00007fdd01aa9c2c in KIO::Slave::qt_metacall (this=0x295dca0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd1b898d0) at ./slave.moc:82
#25 0x00007fdd05114e3f in QMetaObject::activate (sender=0x276faa0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1) at kernel/qobject.cpp:3293
#26 0x00007fdd019c79d7 in KIO::ConnectionPrivate::dequeue (this=0x2771de0) at ../../kio/kio/connection.cpp:82
#27 0x00007fdd019c7afd in KIO::Connection::qt_metacall (this=0x276faa0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x5eb91f0) at ./connection.moc:79
#28 0x00007fdd05111d49 in QObject::event (this=0x276faa0, e=0x5809050) at kernel/qobject.cpp:1248
#29 0x00007fdd055d522c in QApplicationPrivate::notify_helper (this=0x189f7f0, receiver=0x276faa0, e=0x5809050) at kernel/qapplication.cpp:4300
#30 0x00007fdd055db6fb in QApplication::notify (this=0x7fffd1b8a4f0, receiver=0x276faa0, e=0x5809050) at kernel/qapplication.cpp:4183
#31 0x00007fdd076d7526 in KApplication::notify (this=0x7fffd1b8a4f0, receiver=0x276faa0, event=0x5809050) at ../../kdeui/kernel/kapplication.cpp:302
#32 0x00007fdd0510206c in QCoreApplication::notifyInternal (this=0x7fffd1b8a4f0, receiver=0x276faa0, event=0x5809050) at kernel/qcoreapplication.cpp:704
#33 0x00007fdd051047e7 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x14ea8b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#34 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x14ea8b0) at kernel/qcoreapplication.cpp:1345
#35 0x00007fdd0512b9d3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#36 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#37 0x00007fdcfc16a8c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#38 0x00007fdcfc16e748 in ?? () from /lib/libglib-2.0.so.0
#39 0x00007fdcfc16e8fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#40 0x00007fdd0512b513 in QEventDispatcherGlib::processEvents (this=0x14ea000, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#41 0x00007fdd0568546e in QGuiEventDispatcherGlib::processEvents (this=0x5c09e8a, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#42 0x00007fdd05100992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#43 0x00007fdd05100d6c in QEventLoop::exec (this=0x7fffd1b8a320, flags=) at kernel/qeventloop.cpp:201
#44 0x00007fdd05104aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#45 0x0000000000403482 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../kmail/main.cpp:156

Reported using DrKonqi