Version:           svn trunk (using KDE 4.1.2)
Compiler:          gcc 4.3.2 
OS:                Linux
Installed from:    Compiled From Sources

I was in a MSN chat and deleted the person who i was talking to (Chat -> Contacts -> Delete Contact). Then Kopete crashed:

Application: Kopete (kopete), signal SIGABRT
Using host libthread_db library "/lib64/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 139850870265600 (LWP 3778)]
[New Thread 1107003728 (LWP 3800)]
[New Thread 1098611024 (LWP 3798)]
[KCrash handler]
#5  0x00007f3189f15de5 in raise () from /lib64/libc.so.6
#6  0x00007f3189f1718e in abort () from /lib64/libc.so.6
#7  0x00007f318effeb6d in qt_message_output (msgType=QtFatalMsg, 
    buf=<value optimized out>) at global/qglobal.cpp:2108
#8  0x00007f318effeca7 in qFatal (msg=<value optimized out>)
    at global/qglobal.cpp:2309
#9  0x00007f317f5185b1 in MSNChatSession::slotDisplayPictureChanged (
    this=0x44d63e0) at /usr/local/Trolltech/Qt-4.4.2/include/QtCore/qlist.h:252
#10 0x00007f317f519e55 in MSNChatSession::qt_metacall (this=0x44d63e0, 
    _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, 
    _a=0x7fff99759b20)
    at /usr/local/src/svn/kdenetwork/b/kopete/protocols/msn/msnchatsession.moc:128
#11 0x00007f318f10030c in QMetaObject::activate (sender=0x2697240, 
    from_signal_index=<value optimized out>, to_signal_index=8, 
    argv=0xffffffffffffffff) at kernel/qobject.cpp:3028
#12 0x00007f318d71f792 in Kopete::ChatSessionManager::viewActivated (
    this=0xec2, _t1=0x3fa0298)
    at /usr/local/src/svn/kdenetwork/b/kopete/libkopete/kopetechatsessionmanager.moc:136
#13 0x00007f318d71f977 in Kopete::ChatSessionManager::qt_metacall (
    this=0x2697240, _c=QMetaObject::InvokeMetaMethod, 
    _id=<value optimized out>, _a=0x7fff99759c50)
    at /usr/local/src/svn/kdenetwork/b/kopete/libkopete/kopetechatsessionmanager.moc:91
#14 0x00007f318f10030c in QMetaObject::activate (sender=0x3fa0260, 
    from_signal_index=<value optimized out>, to_signal_index=31, 
    argv=0xffffffffffffffff) at kernel/qobject.cpp:3028
#15 0x00007f3181f7bd92 in ChatView::activated (this=0xec2, _t1=0x3fa0298)
    at /usr/local/src/svn/kdenetwork/b/kopete/kopete/chatwindow/chatview.moc:231
#16 0x00007f31902bcf9c in QWidget::event (this=0x4cc9970, event=0x7fff9975a3c0)
    at kernel/qwidget.cpp:7442
#17 0x00007f319061dbdb in QMainWindow::event (this=0x4cc9970, 
    event=0x7fff9975a3c0) at widgets/qmainwindow.cpp:1274
#18 0x00007f318f6f8108 in KXmlGuiWindow::event (this=0xec2, ev=0xec2)
    at /usr/local/src/svn/kdelibs/kdeui/xmlgui/kxmlguiwindow.cpp:125
#19 0x00007f319026bacd in QApplicationPrivate::notify_helper (this=0x258d100, 
    receiver=0x4cc9970, e=0x7fff9975a3c0) at kernel/qapplication.cpp:3809
#20 0x00007f31902736aa in QApplication::notify (this=0x7fff9975ba60, 
    receiver=0x4cc9970, e=0x7fff9975a3c0) at kernel/qapplication.cpp:3774
#21 0x00007f318f5f889b in KApplication::notify (this=0x7fff9975ba60, 
    receiver=0x4cc9970, event=0x7fff9975a3c0)
    at /usr/local/src/svn/kdelibs/kdeui/kernel/kapplication.cpp:307
#22 0x00007f318f0ec35e in QCoreApplication::notifyInternal (
    this=0x7fff9975ba60, receiver=0x4cc9970, event=0x7fff9975a3c0)
    at kernel/qcoreapplication.cpp:593
#23 0x00007f3190272439 in QApplication::setActiveWindow (
    act=<value optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#24 0x00007f31902d5a65 in QApplication::x11ProcessEvent (this=0x7fff9975ba60, 
    event=0x7fff9975aba0) at kernel/qapplication_x11.cpp:3085
#25 0x00007f31902fb124 in x11EventSourceDispatch (s=0x258f2c0, callback=0, 
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#26 0x00007f31891d9951 in g_main_context_dispatch ()
   from /usr/local/lib/libglib-2.0.so.0
#27 0x00007f31891dd02d in g_main_context_iterate ()
   from /usr/local/lib/libglib-2.0.so.0
#28 0x00007f31891dd1eb in g_main_context_iteration ()
   from /usr/local/lib/libglib-2.0.so.0
#29 0x00007f318f113def in QEventDispatcherGlib::processEvents (this=0x258a440, 
    flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:325
#30 0x00007f31902fa8ff in QGuiEventDispatcherGlib::processEvents (this=0xec2, 
    flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#31 0x00007f318f0eacc2 in QEventLoop::processEvents (
    this=<value optimized out>, flags={i = -1720340848})
    at kernel/qeventloop.cpp:149
#32 0x00007f318f0eae4d in QEventLoop::exec (this=0x7fff9975aed0, flags=
      {i = -1720340752}) at kernel/qeventloop.cpp:200
#33 0x00007f31906c7f35 in QDialog::exec (this=0x3300cf0)
    at dialogs/qdialog.cpp:453
#34 0x00007f318f5638fa in KDialogQueue::Private::slotShowQueuedDialog (
    this=0x2c7c510)
    at /usr/local/src/svn/kdelibs/kdeui/dialogs/kdialog.cpp:1051
#35 0x00007f318f5639fd in KDialogQueue::qt_metacall (this=0x2e02dc0, 
    _c=QMetaObject::InvokeMetaMethod, _id=0, _a=<value optimized out>)
    at /usr/local/src/svn/kdelibs/b/kdeui/kdialogqueue_p.moc:65
#36 0x00007f318f10030c in QMetaObject::activate (sender=0x4985820, 
    from_signal_index=<value optimized out>, to_signal_index=4, 
    argv=0xffffffffffffffff) at kernel/qobject.cpp:3028
#37 0x00007f318f10641f in QSingleShotTimer::timerEvent (this=0x4985820)
    at kernel/qtimer.cpp:300
#38 0x00007f318f0fad73 in QObject::event (this=0x4985820, e=0xec2)
    at kernel/qobject.cpp:1117
#39 0x00007f319026bacd in QApplicationPrivate::notify_helper (this=0x258d100, 
    receiver=0x4985820, e=0x7fff9975b720) at kernel/qapplication.cpp:3809
#40 0x00007f31902736aa in QApplication::notify (this=0x7fff9975ba60, 
    receiver=0x4985820, e=0x7fff9975b720) at kernel/qapplication.cpp:3774
#41 0x00007f318f5f889b in KApplication::notify (this=0x7fff9975ba60, 
    receiver=0x4985820, event=0x7fff9975b720)
    at /usr/local/src/svn/kdelibs/kdeui/kernel/kapplication.cpp:307
#42 0x00007f318f0ec35e in QCoreApplication::notifyInternal (
    this=0x7fff9975ba60, receiver=0x4985820, event=0x7fff9975b720)
    at kernel/qcoreapplication.cpp:593
#43 0x00007f318f11751e in QTimerInfoList::activateTimers (this=0x258f260)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#44 0x00007f318f113e7d in timerSourceDispatch (source=<value optimized out>)
    at kernel/qeventdispatcher_glib.cpp:166
#45 0x00007f31891d9951 in g_main_context_dispatch ()
   from /usr/local/lib/libglib-2.0.so.0
#46 0x00007f31891dd02d in g_main_context_iterate ()
   from /usr/local/lib/libglib-2.0.so.0
#47 0x00007f31891dd1eb in g_main_context_iteration ()
   from /usr/local/lib/libglib-2.0.so.0
#48 0x00007f318f113def in QEventDispatcherGlib::processEvents (this=0x258a440, 
    flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:325
#49 0x00007f31902fa8ff in QGuiEventDispatcherGlib::processEvents (this=0xec2, 
    flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007f318f0eacc2 in QEventLoop::processEvents (
    this=<value optimized out>, flags={i = -1720338032})
    at kernel/qeventloop.cpp:149
#51 0x00007f318f0eae4d in QEventLoop::exec (this=0x7fff9975b9d0, flags=
      {i = -1720337952}) at kernel/qeventloop.cpp:200
#52 0x00007f318f0ed28d in QCoreApplication::exec ()
    at kernel/qcoreapplication.cpp:851
#53 0x000000000044873c in main (argc=1, argv=0x7fff9975c828)
    at /usr/local/src/svn/kdenetwork/kopete/kopete/main.cpp:102
#0  0x00007f3189f7b1a1 in ?? () from /lib64/libc.so.6