Application that crashed: kmail
Version of the application: 1.12.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.6.0
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
There might be a connection that my system was running on "Extreme Powersave" when the crash occured.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  DwEntity::Headers (this=0xbfff4ce8) at ../../mimelib/entity.cpp:242
#7  0x00f0fb85 in KMMessage::from (this=0x8db3b40) at ../../kmail/kmmessage.cpp:1712
#8  0x0119e9eb in KMail::FancyHeaderStyle::format (this=0x8a94708, message=0x8db3b40, strategy=0x84eb880, vCardName=..., printing=false, topLevel=true) at ../../kmail/headerstyle.cpp:457
#9  0x0101ee17 in KMReaderWin::writeMsgHeader (this=0x8984078, aMsg=0x8db3b40, hasVCard=false, topLevel=<value optimized out>) at ../../kmail/kmreaderwin.cpp:1791
#10 0x010272f2 in KMReaderWin::parseMsg (this=0x8984078, aMsg=0x8db3b40) at ../../kmail/kmreaderwin.cpp:1678
#11 0x01014729 in KMReaderWin::displayMessage (this=0x8984078) at ../../kmail/kmreaderwin.cpp:1608
#12 0x0101491b in KMReaderWin::updateReaderWin (this=0x8984078) at ../../kmail/kmreaderwin.cpp:1548
#13 0x01022ed4 in KMReaderWin::qt_metacall (this=0x8984078, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbfffa9bc) at ./kmreaderwin.moc:168
#14 0x01ffac3a in QMetaObject::metacall (object=0x8984078, cl=QMetaObject::InvokeMetaMethod, idx=33, argv=0xbfffa9bc) at kernel/qmetaobject.cpp:237
#15 0x020096fb in QMetaObject::activate (sender=0x89840d0, m=0x21085a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3398
#16 0x02059c27 in QTimer::timeout (this=0x89840d0) at .moc/release-shared/moc_qtimer.cpp:134
#17 0x0201146e in QTimer::timerEvent (this=0x89840d0, e=0xbfffae60) at kernel/qtimer.cpp:271
#18 0x020061b4 in QObject::event (this=0x89840d0, e=0xbfff4cec) at kernel/qobject.cpp:1210
#19 0x02bd5c6c in QApplicationPrivate::notify_helper (this=0x83a9d48, receiver=0x89840d0, e=0xbfffae60) at kernel/qapplication.cpp:4277
#20 0x02bdca1e in QApplication::notify (this=0xbfffb260, receiver=0x89840d0, e=0xbfffae60) at kernel/qapplication.cpp:3702
#21 0x00cba1aa in KApplication::notify (this=0xbfffb260, receiver=0x89840d0, event=0xbfffae60) at ../../kdeui/kernel/kapplication.cpp:302
#22 0x01ff59cb in QCoreApplication::notifyInternal (this=0xbfffb260, receiver=0x89840d0, event=0xbfffae60) at kernel/qcoreapplication.cpp:704
#23 0x02024b86 in QCoreApplication::sendEvent (this=0x82b54c4) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QTimerInfoList::activateTimers (this=0x82b54c4) at kernel/qeventdispatcher_unix.cpp:603
#25 0x02021837 in timerSourceDispatch (source=0x82b0cc8) at kernel/qeventdispatcher_glib.cpp:184
#26 idleTimerSourceDispatch (source=0x82b0cc8) at kernel/qeventdispatcher_glib.cpp:231
#27 0x072f5e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0x072f9730 in ?? () from /lib/libglib-2.0.so.0
#29 0x072f9863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0x020214f5 in QEventDispatcherGlib::processEvents (this=0x8284880, flags=...) at kernel/qeventdispatcher_glib.cpp:407
#31 0x02c89635 in QGuiEventDispatcherGlib::processEvents (this=0x8284880, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x01ff4019 in QEventLoop::processEvents (this=0xbfffb124, flags=) at kernel/qeventloop.cpp:149
#33 0x01ff446a in QEventLoop::exec (this=0xbfffb124, flags=...) at kernel/qeventloop.cpp:201
#34 0x01ff862f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#35 0x02bd5d07 in QApplication::exec () at kernel/qapplication.cpp:3616
#36 0x0804a702 in main (argc=1, argv=0xbfffb414) at ../../kmail/main.cpp:146

Reported using DrKonqi