Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.86 (KDE 4.2.86 (KDE 4.3 >= 20090514)) "release 126"
Qt Version: 4.5.1
Operating System: Linux 2.6.25.20-0.1-pae i686

What I was doing when the application crashed:
I was searching KDE Look with akregator and opened a new wallpaper. After closing the window kontact crashed.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xb67c3312 in QObjectPrivate::setParent_helper (this=0x9d5bd98, o=0x0) at kernel/qobject.cpp:1868
#7  0xb67cb298 in ~QObject (this=0x9f4a700) at kernel/qobject.cpp:854
#8  0xb71b812e in ~Part (this=0x9f4a700, __vtt_parm=0xb7fd5528) at /usr/src/debug/kdelibs-4.2.85/kparts/part.cpp:212
#9  0xb71b845a in ~ReadOnlyPart (this=0x9f4a700, __vtt_parm=0xb7fd5524) at /usr/src/debug/kdelibs-4.2.85/kparts/part.cpp:459
#10 0xb7af11e7 in ~KHTMLPart (this=0x9f4a700) at /usr/src/debug/kdelibs-4.2.85/khtml/khtml_part.cpp:621
#11 0xb67c2b85 in qDeleteInEventHandler (o=0xfd) at kernel/qobject.cpp:3822
#12 0xb67c4473 in QObject::event (this=0x9f4a700, e=0xa0d1848) at kernel/qobject.cpp:1101
#13 0xb5c6f55c in QApplicationPrivate::notify_helper (this=0x80823c8, receiver=0x9f4a700, e=0xa0d1848) at kernel/qapplication.cpp:4057
#14 0xb5c7788e in QApplication::notify (this=0xbfe4d8d8, receiver=0x9f4a700, e=0xa0d1848) at kernel/qapplication.cpp:3604
#15 0xb6d5693d in KApplication::notify (this=0xbfe4d8d8, receiver=0x9f4a700, event=0xa0d1848) at /usr/src/debug/kdelibs-4.2.85/kdeui/kernel/kapplication.cpp:307
#16 0xb67b39cb in QCoreApplication::notifyInternal (this=0xbfe4d8d8, receiver=0x9f4a700, event=0xa0d1848) at kernel/qcoreapplication.cpp:610
#17 0xb67b4615 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8053b30) at kernel/qcoreapplication.h:213
#18 0xb67b480d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#19 0xb67df92f in postEventSourceDispatch (s=0x8084520) at kernel/qcoreapplication.h:218
#20 0xb4fc72f9 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#21 0xb4fca87b in ?? () from /usr/lib/libglib-2.0.so.0
#22 0xb4fca9f8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#23 0xb67df578 in QEventDispatcherGlib::processEvents (this=0x80823b8, flags={i = -1075521624}) at kernel/qeventdispatcher_glib.cpp:324
#24 0xb5d0f9f5 in QGuiEventDispatcherGlib::processEvents (this=0x80823b8, flags={i = -1075521576}) at kernel/qguieventdispatcher_glib.cpp:202
#25 0xb67b200a in QEventLoop::processEvents (this=0xbfe4d850, flags={i = -1075521512}) at kernel/qeventloop.cpp:149
#26 0xb67b244a in QEventLoop::exec (this=0xbfe4d850, flags={i = -1075521448}) at kernel/qeventloop.cpp:200
#27 0xb67b48d9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#28 0xb5c6f3d7 in QApplication::exec () at kernel/qapplication.cpp:3526
#29 0x0804c04f in _start ()