Application that crashed: kontact
Version of the application: 4.3.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-server i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Kontact just crashed, no input (wasn't even in the foreground).  Had it open for about 1 minute.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xaffdb23f in KMFolder::open (this=0x8bd6c18, owner=0xb04bbac2 "actionsched") at /build/buildd/kdepim-4.3.2/kmail/kmfolder.cpp:540
#7  0xb0017bb9 in KMail::ActionScheduler::tempOpenFolder (this=0xa3a97b0, aFolder=0x8bd6c18) at /build/buildd/kdepim-4.3.2/kmail/actionscheduler.cpp:225
#8  0xb0017da4 in KMail::ActionScheduler::messageBase (this=0xa3a97b0, serNum=21999) at /build/buildd/kdepim-4.3.2/kmail/actionscheduler.cpp:315
#9  0xb00197d2 in KMail::ActionScheduler::fetchMessage (this=0xa3a97b0) at /build/buildd/kdepim-4.3.2/kmail/actionscheduler.cpp:436
#10 0xb001d0cc in KMail::ActionScheduler::qt_metacall (this=0xa3a97b0, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0xbfaa6b08)
    at /build/buildd/kdepim-4.3.2/obj-i486-linux-gnu/kmail/actionscheduler.moc:118
#11 0xb5c1c1b8 in QMetaObject::activate (sender=0xa3a6878, from_signal_index=4, to_signal_index=4, argv=0x0) at kernel/qobject.cpp:3113
#12 0xb5c1ce42 in QMetaObject::activate (sender=0xa3a6878, m=0xb5cf9904, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3187
#13 0xb5c58687 in QTimer::timeout (this=0xa3a6878) at .moc/release-shared/moc_qtimer.cpp:128
#14 0xb5c225ce in QTimer::timerEvent (this=0xa3a6878, e=0xbfaa6f8c) at kernel/qtimer.cpp:261
#15 0xb5c1716f in QObject::event (this=0xa3a6878, e=0xbfaa6f8c) at kernel/qobject.cpp:1075
#16 0xb60cad3c in QApplicationPrivate::notify_helper (this=0x8603478, receiver=0xa3a6878, e=0xbfaa6f8c) at kernel/qapplication.cpp:4056
#17 0xb60d303e in QApplication::notify (this=0xbfaa7238, receiver=0xa3a6878, e=0xbfaa6f8c) at kernel/qapplication.cpp:3603
#18 0xb6cc449d in KApplication::notify (this=0xbfaa7238, receiver=0xa3a6878, event=0xbfaa6f8c) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#19 0xb5c06bcb in QCoreApplication::notifyInternal (this=0xbfaa7238, receiver=0xa3a6878, event=0xbfaa6f8c) at kernel/qcoreapplication.cpp:610
#20 0xb5c35d51 in QTimerInfoList::activateTimers (this=0x85fec34) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#21 0xb5c323a0 in timerSourceDispatch (source=0x85fec00) at kernel/qeventdispatcher_glib.cpp:165
#22 0xb4cd7b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#23 0xb4cdb0eb in ?? () from /usr/lib/libglib-2.0.so.0
#24 0xb4cdb268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#25 0xb5c322f8 in QEventDispatcherGlib::processEvents (this=0x85d6028, flags={i = -1079348984}) at kernel/qeventdispatcher_glib.cpp:327
#26 0xb616ca75 in QGuiEventDispatcherGlib::processEvents (this=0x85d6028, flags={i = -1079348936}) at kernel/qguieventdispatcher_glib.cpp:202
#27 0xb5c051fa in QEventLoop::processEvents (this=0xbfaa71b0, flags={i = -1079348872}) at kernel/qeventloop.cpp:149
#28 0xb5c05642 in QEventLoop::exec (this=0xbfaa71b0, flags={i = -1079348808}) at kernel/qeventloop.cpp:201
#29 0xb5c07ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#30 0xb60cabb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#31 0x0804bfef in main (argc=1, argv=0xbfaa7534) at /build/buildd/kdepim-4.3.2/kontact/src/main.cpp:218

Reported using DrKonqi