Application that crashed: kontact
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.5-32.fc11.i686.PAE i686

What I was doing when the application crashed:
I selected File, Exit. The crash reporter appeared.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0x07afda46 in qDeleteAll<QList<KIO::Slave*>::const_iterator> (end=<value optimized out>, begin=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:350
#8  qDeleteAll<SlaveList> (end=<value optimized out>, begin=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:358
#9  ~ProtocolInfo (end=<value optimized out>, begin=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kio/kio/scheduler.cpp:171
#10 qDeleteAll<QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator> (end=<value optimized out>, begin=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:350
#11 0x07af9fce in qDeleteAll<KIO::SchedulerPrivate::ProtocolInfoDict> (c=<value optimized out>) at /usr/include/QtCore/qalgorithms.h:358
#12 ~SchedulerPrivate (c=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kio/kio/scheduler.cpp:103
#13 <anonymous struct>::destroy(void) (c=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kio/kio/scheduler.cpp:209
#14 0x07a2c4ab in KCleanUpGlobalStatic::~KCleanUpGlobalStatic (this=0x7c2e1f0, __in_chrg=<value optimized out>) at /usr/src/debug/kdelibs-4.3.0/kdecore/kernel/kglobal.h:62
#15 0x0082be0f in __run_exit_handlers (status=<value optimized out>, status=<value optimized out>, listp=<value optimized out>, run_list_atexit=<value optimized out>) at exit.c:78
#16 *__GI_exit (status=<value optimized out>, status=<value optimized out>, listp=<value optimized out>, run_list_atexit=<value optimized out>) at exit.c:100
#17 0x00813a6e in __libc_start_main (main=0x804a760 <main(int, char **)>, argc=1, ubp_av=0xbf8c0ce4, init=0x804bf00 <__libc_csu_init>, fini=0x804bef0 <__libc_csu_fini>, 
    rtld_fini=0x1e0030 <_dl_fini>, stack_end=0xbf8c0cdc) at libc-start.c:252
#18 0x0804a3e1 in _start ()

Reported using DrKonqi