Version:            (using KDE 4.1.3)
OS:                Linux
Installed from:    Debian testing/unstable Packages

I did some lookups on contacts of my addressbook, nothing written to it. 
When opening the preferences of kaddressbook within kontact, it crashes.

Anwendung: Kontact (kontact), Signal SIGSEGV             
[Thread debugging using libthread_db enabled]            
[New Thread 0x7f77b23a86f0 (LWP 3940)]                   
[New Thread 0x41ab1950 (LWP 3947)]                       
[KCrash handler]                                         
#5  0x0000000002e20000 in ?? ()                          
#6  0x00007f77b16d530f in KDEPrivate::KEditToolBarWidgetPrivate::initKPart (
    this=0x229e1d0, factory=<value optimized out>, defaultToolBar=@0x21715c0)
    at /tmp/buildd/kde4libs-4.1.3/kdeui/dialogs/kedittoolbar.cpp:711         
#7  0x00007f77b16d5f98 in KEditToolBar::showEvent (this=0x7fffba4e6c30,      
    event=0x7fffba4e6a40)                                                    
    at /tmp/buildd/kde4libs-4.1.3/kdeui/dialogs/kedittoolbar.cpp:649         
#8  0x00007f77b07b2f72 in QWidget::event (this=0x7fffba4e6c30,               
    event=0x7fffba4e6a40) at kernel/qwidget.cpp:7360                         
#9  0x00007f77b0760a5d in QApplicationPrivate::notify_helper (this=0x18fc070, 
    receiver=0x7fffba4e6c30, e=0x7fffba4e6a40) at kernel/qapplication.cpp:3803
#10 0x00007f77b07687da in QApplication::notify (this=0x7fffba4e8790,          
    receiver=0x7fffba4e6c30, e=0x7fffba4e6a40) at kernel/qapplication.cpp:3768
#11 0x00007f77b175a85b in KApplication::notify (this=0x7fffba4e8790,          
    receiver=0x7fffba4e6c30, event=0x7fffba4e6a40)                            
    at /tmp/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311           
#12 0x00007f77b02ae381 in QCoreApplication::notifyInternal (                  
    this=0x7fffba4e8790, receiver=0x7fffba4e6c30, event=0x7fffba4e6a40)       
    at kernel/qcoreapplication.cpp:587                                        
#13 0x00007f77b07b5d61 in QWidgetPrivate::show_helper (this=0x2c29d90)        
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:209   
#14 0x00007f77b07b62aa in QWidget::setVisible (this=0x7fffba4e6c30,           
    visible=<value optimized out>) at kernel/qwidget.cpp:6584                 
#15 0x00007f77b0b7953c in QDialog::setVisible (this=0x7fffba4e6c30,           
    visible=<value optimized out>) at dialogs/qdialog.cpp:651                 
#16 0x00007f77b0b787f2 in QDialog::exec (this=0x7fffba4e6c30)                 
    at ../../include/QtGui/../../src/gui/kernel/qwidget.h:464                 
#17 0x00007f77b20b79db in Kontact::MainWindow::configureToolbars (            
    this=0x19add30)                                                           
    at /tmp/buildd/kdepim-4.1.3/kontact/src/mainwindow.cpp:1020               
#18 0x00007f77b20be67f in Kontact::MainWindow::qt_metacall (this=0x19add30,   
    _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>,              
    _a=0x7fffba4e6e10)                                                        
    at /tmp/buildd/kdepim-4.1.3/obj-x86_64-linux-gnu/kontact/src/mainwindow.moc:127                                                                                 
#19 0x00007f77b02c26d4 in QMetaObject::activate (sender=0x1cc7540,                
    from_signal_index=<value optimized out>, to_signal_index=6, argv=0x5)         
    at kernel/qobject.cpp:3031                                                    
#20 0x00007f77b075ad77 in QAction::triggered (this=0x7fffba4e63f0, _t1=false)     
    at .moc/release-shared/moc_qaction.cpp:216                                    
#21 0x00007f77b075b540 in QAction::activate (this=0x1cc7540,                      
    event=<value optimized out>) at kernel/qaction.cpp:1125                       
#22 0x00007f77b0af29ed in QMenuPrivate::activateAction (this=0x1ce3ac0,           
    action=0x1cc7540, action_e=QAction::Trigger, self=true)                       
    at widgets/qmenu.cpp:1002                                                     
#23 0x00007f77b1819941 in KMenu::mouseReleaseEvent (this=0x1cedeb0,               
    e=0x7fffba4e7a00)                                                             
    at /tmp/buildd/kde4libs-4.1.3/kdeui/widgets/kmenu.cpp:452                     
#24 0x00007f77b07b3139 in QWidget::event (this=0x1cedeb0,                         
    event=0x7fffba4e7a00) at kernel/qwidget.cpp:7163                              
#25 0x00007f77b0af51cb in QMenu::event (this=0x1cedeb0, e=0x7fffba4e7a00)         
    at widgets/qmenu.cpp:2265                                                     
#26 0x00007f77b0760a5d in QApplicationPrivate::notify_helper (this=0x18fc070,     
    receiver=0x1cedeb0, e=0x7fffba4e7a00) at kernel/qapplication.cpp:3803         
#27 0x00007f77b076904a in QApplication::notify (this=<value optimized out>,       
    receiver=0x1cedeb0, e=0x7fffba4e7a00) at kernel/qapplication.cpp:3528         
#28 0x00007f77b175a85b in KApplication::notify (this=0x7fffba4e8790,              
    receiver=0x1cedeb0, event=0x7fffba4e7a00)                                     
    at /tmp/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311               
#29 0x00007f77b02ae381 in QCoreApplication::notifyInternal (                      
    this=0x7fffba4e8790, receiver=0x1cedeb0, event=0x7fffba4e7a00)                
    at kernel/qcoreapplication.cpp:587                                            
#30 0x00007f77b07683e8 in QApplicationPrivate::sendMouseEvent (                   
    receiver=0x1cedeb0, event=0x7fffba4e7a00, alienWidget=0x0,                    
    nativeWidget=0x1cedeb0, buttonDown=<value optimized out>,                     
    lastMouseReceiver=@0x7f77b10e6000)                                            
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:212
#31 0x00007f77b07ccac4 in QETWidget::translateMouseEvent (this=0x1cedeb0,
    event=<value optimized out>) at kernel/qapplication_x11.cpp:3976
#32 0x00007f77b07cb7ff in QApplication::x11ProcessEvent (this=0x40,
    event=0x7fffba4e82c0) at kernel/qapplication_x11.cpp:3160
#33 0x00007f77b07f2c84 in x11EventSourceDispatch (s=0x18ff8d0, callback=0,
    user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#34 0x00007f77aa73478b in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#35 0x00007f77aa737f5d in ?? () from /usr/lib/libglib-2.0.so.0
#36 0x00007f77aa73811b in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#37 0x00007f77b02d670f in QEventDispatcherGlib::processEvents (
    this=0x18f0080, flags=<value optimized out>)
    at kernel/qeventdispatcher_glib.cpp:319
#38 0x00007f77b07f244f in QGuiEventDispatcherGlib::processEvents (
    this=0x7fffba4e63f0, flags=<value optimized out>)
    at kernel/qguieventdispatcher_glib.cpp:198
#39 0x00007f77b02acca2 in QEventLoop::processEvents (
    this=<value optimized out>, flags={i = -1169259088})
    at kernel/qeventloop.cpp:143
#40 0x00007f77b02ace2d in QEventLoop::exec (this=0x7fffba4e85f0, flags=
      {i = -1169259008}) at kernel/qeventloop.cpp:194
#41 0x00007f77b02af2dd in QCoreApplication::exec ()
    at kernel/qcoreapplication.cpp:845
#42 0x0000000000404821 in main (argc=1, argv=0x7fffba4e8d68)
    at /tmp/buildd/kdepim-4.1.3/kontact/src/main.cpp:218
#0  0x00007f77afb98ff1 in nanosleep () from /lib/libc.so.6