Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-020630-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
It was running in the background with the KMail component, can't say what it was doing at the time of the crash. I suppose it was checking mail as I have auto-retrieve set to 1 minute. The backtrace seems to point to either filters (of which I have LOTS) or search folders (of which I don't have any, but used to).

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  KMail::FolderJob::msgList (this=0x31) at /usr/include/qt4/QtCore/qlist.h:111
#6  0x00007f82f0179055 in FolderStorage::ignoreJobsForMessage (this=0x2da6c10, msg=0xbf3b5f0) at /build/buildd/kdepim-4.3.1/kmail/folderstorage.cpp:1113
#7  0x00007f82f0177f51 in FolderStorage::unGetMsg (this=0x2da6c10, idx=0) at /build/buildd/kdepim-4.3.1/kmail/folderstorage.cpp:569
#8  0x00007f82f01c1000 in KMSearchPattern::matches (this=0x4eb7160, serNum=<value optimized out>, ignoreBody=<value optimized out>) at /build/buildd/kdepim-4.3.1/kmail/kmsearchpattern.cpp:796
#9  0x00007f82f01779c9 in FolderStorage::slotProcessNextSearchBatch (this=0x2da6c10) at /build/buildd/kdepim-4.3.1/kmail/folderstorage.cpp:1180
#10 0x00007f82f035de13 in KMSearch::slotProcessNextBatch (this=0x4ea7910) at /build/buildd/kdepim-4.3.1/kmail/kmfoldersearch.cpp:272
#11 0x00007f82f035df88 in KMSearch::qt_metacall (this=0x4ea7910, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff39e6fb10)
    at /build/buildd/kdepim-4.3.1/obj-x86_64-linux-gnu/kmail/kmfoldersearch.moc:79
#12 0x00007f830318cea2 in QMetaObject::activate (sender=0x2d24760, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x8a9d920) at kernel/qobject.cpp:3113
#13 0x00007f8303187263 in QObject::event (this=0x2d24760, e=0x31) at kernel/qobject.cpp:1075
#14 0x00007f8303cf7f4d in QApplicationPrivate::notify_helper (this=0x2499170, receiver=0x2d24760, e=0x7fff39e701c0) at kernel/qapplication.cpp:4056
#15 0x00007f8303d0018a in QApplication::notify (this=0x7fff39e70510, receiver=0x2d24760, e=0x7fff39e701c0) at kernel/qapplication.cpp:4021
#16 0x00007f83050fcdeb in KApplication::notify (this=0x7fff39e70510, receiver=0x2d24760, event=0x7fff39e701c0) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#17 0x00007f83031776ac in QCoreApplication::notifyInternal (this=0x7fff39e70510, receiver=0x2d24760, event=0x7fff39e701c0) at kernel/qcoreapplication.cpp:610
#18 0x00007f83031a4516 in QTimerInfoList::activateTimers (this=0x2489d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#19 0x00007f83031a0b2d in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:165
#20 0x00007f82fc8c820a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0x00007f82fc8cb8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#22 0x00007f82fc8cba7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0x00007f83031a0a8f in QEventDispatcherGlib::processEvents (this=0x24610a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#24 0x00007f8303d90bdf in QGuiEventDispatcherGlib::processEvents (this=0x7fff39e6f8b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#25 0x00007f8303175f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 971441200}) at kernel/qeventloop.cpp:149
#26 0x00007f8303176314 in QEventLoop::exec (this=0x7fff39e70470, flags={i = 971441280}) at kernel/qeventloop.cpp:201
#27 0x00007f83031785e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#28 0x0000000000404945 in main (argc=1, argv=0x7fff39e70bf8) at /build/buildd/kdepim-4.3.1/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 205451

Reported using DrKonqi