Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.30-1-686-bigmem i686
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I do not know whether the crash was caused by deleting the mail (moving to trash folder on the same IMAP account) or showing the next one in the folder.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xb123a741 in KMFolderImap::take (this=0x91ff238, idx=-1) at ../../kmail/kmfolderimap.cpp:596
#7  0xb117e0e4 in FolderStorage::takeMessages (this=0x91ff238, msgList=...) at ../../kmail/folderstorage.cpp:474
#8  0xb114b4ce in KMFolder::takeMessages (this=0x91fb750, msgList=...) at ../../kmail/kmfolder.cpp:432
#9  0xb123861d in KMFolderImap::addMsgQuiet (this=0x931bbf0, msgList=...) at ../../kmail/kmfolderimap.cpp:381
#10 0xb123e782 in KMFolderImap::qt_metacall (this=0x931bbf0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbf99f4cc) at ./kmfolderimap.moc:156
#11 0xb7709303 in QMetaObject::activate (sender=0xa78b760, from_signal_index=7, to_signal_index=7, argv=0xbf99f4cc) at kernel/qobject.cpp:3112
#12 0xb7709f42 in QMetaObject::activate (sender=0xa78b760, m=0xb17514d0, local_signal_index=3, argv=0xbf99f4cc) at kernel/qobject.cpp:3186
#13 0xb13825a3 in KMail::FolderJob::messageCopied (this=0xa78b760, _t1=...) at ./folderjob.moc:120
#14 0xb1391f84 in KMail::ImapJob::slotCopyMessageResult (this=0xa78b760, job=0xb9346f0) at ../../kmail/imapjob.cpp:655
#15 0xb1393404 in KMail::ImapJob::qt_metacall (this=0xa78b760, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf99f65c) at ./imapjob.moc:88
#16 0xb7709303 in QMetaObject::activate (sender=0xb9346f0, from_signal_index=7, to_signal_index=7, argv=0xbf99f65c) at kernel/qobject.cpp:3112
#17 0xb7709f42 in QMetaObject::activate (sender=0xb9346f0, m=0xb7a1dc28, local_signal_index=3, argv=0xbf99f65c) at kernel/qobject.cpp:3186
#18 0xb78c04d3 in KJob::result (this=0xb9346f0, _t1=0xb9346f0) at ./kjob.moc:188
#19 0xb78c0979 in KJob::emitResult (this=0xb9346f0) at ../../kdecore/jobs/kjob.cpp:304
#20 0xb6119bd5 in KIO::SimpleJob::slotFinished (this=0xb9346f0) at ../../kio/kio/job.cpp:477
#21 0xb6116863 in KIO::SimpleJob::qt_metacall (this=0xb9346f0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbf99f7b8) at ./jobclasses.moc:159
#22 0xb7709303 in QMetaObject::activate (sender=0x9c03088, from_signal_index=8, to_signal_index=8, argv=0x0) at kernel/qobject.cpp:3112
#23 0xb7709f42 in QMetaObject::activate (sender=0x9c03088, m=0xb62c1ba4, local_signal_index=4, argv=0x0) at kernel/qobject.cpp:3186
#24 0xb61df7d7 in KIO::SlaveInterface::finished (this=0x9c03088) at ./slaveinterface.moc:165
#25 0xb61e3587 in KIO::SlaveInterface::dispatch (this=0x9c03088, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:175
#26 0xb61dfcb7 in KIO::SlaveInterface::dispatch (this=0x9c03088) at ../../kio/kio/slaveinterface.cpp:91
#27 0xb61d1c9d in KIO::Slave::gotInput (this=0x9c03088) at ../../kio/kio/slave.cpp:322
#28 0xb61d4183 in KIO::Slave::qt_metacall (this=0x9c03088, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbf99fa88) at ./slave.moc:76
#29 0xb7709303 in QMetaObject::activate (sender=0x9bff8e8, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3112
#30 0xb7709f42 in QMetaObject::activate (sender=0x9bff8e8, m=0xb62be4e0, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3186
#31 0xb60ddd57 in KIO::Connection::readyRead (this=0x9bff8e8) at ./connection.moc:86
#32 0xb60df663 in KIO::ConnectionPrivate::dequeue (this=0x9c00928) at ../../kio/kio/connection.cpp:82
#33 0xb60dfa46 in KIO::Connection::qt_metacall (this=0x9bff8e8, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xcc89cf0) at ./connection.moc:73
#34 0xb7702b0b in QMetaCallEvent::placeMetaCall (this=0xbe30ca0, object=0x9bff8e8) at kernel/qobject.cpp:477
#35 0xb77045e0 in QObject::event (this=0x9bff8e8, e=0xbe30ca0) at kernel/qobject.cpp:1110
#36 0xb6d33a94 in QApplicationPrivate::notify_helper (this=0x8e43458, receiver=0x9bff8e8, e=0xbe30ca0) at kernel/qapplication.cpp:4065
#37 0xb6d3bbee in QApplication::notify (this=0xbf9a034c, receiver=0x9bff8e8, e=0xbe30ca0) at kernel/qapplication.cpp:3605
#38 0xb7bf60fd in KApplication::notify (this=0xbf9a034c, receiver=0x9bff8e8, event=0xbe30ca0) at ../../kdeui/kernel/kapplication.cpp:302
#39 0xb76f41eb in QCoreApplication::notifyInternal (this=0xbf9a034c, receiver=0x9bff8e8, event=0xbe30ca0) at kernel/qcoreapplication.cpp:610
#40 0xb76f4e2e in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8e1a998) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8e1a998) at kernel/qcoreapplication.cpp:1247
#42 0xb76f500d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#43 0xb771f4cf in QCoreApplication::sendPostedEvents (s=0x8e3afd8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#44 postEventSourceDispatch (s=0x8e3afd8) at kernel/qeventdispatcher_glib.cpp:276
#45 0xb514ce98 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#46 0xb5150623 in ?? () from /lib/libglib-2.0.so.0
#47 0xb51507a8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#48 0xb771f041 in QEventDispatcherGlib::processEvents (this=0x8e1a6e8, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#49 0xb6dd3305 in QGuiEventDispatcherGlib::processEvents (this=0x8e1a6e8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#50 0xb76f283a in QEventLoop::processEvents (this=0xbf9a01c0, flags=...) at kernel/qeventloop.cpp:149
#51 0xb76f2c82 in QEventLoop::exec (this=0xbf9a01c0, flags=...) at kernel/qeventloop.cpp:201
#52 0xb76f50d9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#53 0xb6d33917 in QApplication::exec () at kernel/qapplication.cpp:3525
#54 0x0804bd40 in main (argc=1, argv=0xbf9a0544) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi