Application that crashed: kontact
Version of the application: 4.3.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.32-trunk-686-bigmem i686
Distribution: Debian GNU/Linux testing-proposed-updates (sid)

What I was doing when the application crashed:
on the warning dialog I did choose to quit

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x00000010 in ?? ()
#7  0xb59fab7e in qDeleteAll<KIO::SchedulerPrivate::ProtocolInfoDict> () at /usr/include/qt4/QtCore/qalgorithms.h:358
#8  ~SchedulerPrivate () at ../../kio/kio/scheduler.cpp:103
#9  destroy () at ../../kio/kio/scheduler.cpp:209
#10 0xb592df0b in ~KCleanUpGlobalStatic (this=0xb5afe1f4, __in_chrg=<value optimized out>) at ../../kdecore/kernel/kglobal.h:62
#11 0xb6221481 in __run_exit_handlers (status=1, listp=0xb6335324, run_list_atexit=true) at exit.c:78
#12 0xb62214df in *__GI_exit (status=1) at exit.c:100
#13 0xb091ace8 in KMail::lockOrDie () at ../../kmail/kmstartup.cpp:231
#14 0xb0d5c1f3 in KMailPart (this=0xa0b0df0, parentWidget=0x9f589e8, parent=0x9f589e8, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at ../../kmail/kmail_part.cpp:69
#15 0xb0d5ce82 in KPluginFactory::createPartInstance<KMailPart> (parentWidget=0x9f589e8, parent=0x9f589e8, args=...) at /usr/include/kpluginfactory.h:467
#16 0xb7217ad5 in KPluginFactory::create (this=0xa0909f8, iface=0xb61ec4e0 "KParts::ReadOnlyPart", parentWidget=0x9f589e8, parent=0x9f589e8, args=..., keyword=...)
    at ../../kdecore/util/kpluginfactory.cpp:191
#17 0xb771ea67 in KPluginFactory::create<KParts::ReadOnlyPart> (this=0x9f589e8, libname=0xa0fa070 "kmailpart") at /usr/include/kpluginfactory.h:491
#18 Kontact::Core::createPart (this=0x9f589e8, libname=0xa0fa070 "kmailpart") at ../../kontactinterfaces/core.cpp:87
#19 0xb771f7a7 in Kontact::Plugin::loadPart (this=0xa0f86c0) at ../../kontactinterfaces/plugin.cpp:148
#20 0xb0e27655 in KMailPlugin::createPart (this=0xa0f86c0) at ../../../../kontact/plugins/kmail/kmail_plugin.cpp:170
#21 0xb771f703 in Kontact::Plugin::part (this=0xa0f86c0) at ../../kontactinterfaces/plugin.cpp:187
#22 0xb773b6bc in Kontact::MainWindow::selectPlugin (this=0x9f589e8, plugin=0xa0f86c0) at ../../../kontact/src/mainwindow.cpp:754
#23 0xb773671c in Kontact::MainWindow::loadSettings (this=0x9f589e8) at ../../../kontact/src/mainwindow.cpp:926
#24 0xb773fcc1 in Kontact::MainWindow::initObject (this=0x9f589e8) at ../../../kontact/src/mainwindow.cpp:226
#25 0xb774015d in MainWindow (this=0x9f589e8, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at ../../../kontact/src/mainwindow.cpp:162
#26 0x0804bb6c in main (argc=3, argv=0xbfbf4484) at ../../../kontact/src/main.cpp:210

Reported using DrKonqi