Version:           0.1 prerelease (using KDE 3.5.4, Kubuntu Package 4:3.5.4-0ubuntu2~dapper1 )
Compiler:          Target: i486-linux-gnu
OS:                Linux (i686) release 2.6.15-26-686

the backtrace :

Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread -1232337216 (LWP 6623)]
[KCrash handler]
#6  0xb676af53 in Encryption::getSecrets ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#7  0xb675bf73 in WirelessDialog::comboEncryption_activated ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#8  0xb675d618 in AcquirePasswordDialog::AcquirePasswordDialog ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#9  0xb67613e9 in NetworkManagerInfo::acquirePassphrase ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#10 0xb67623ba in NetworkManagerInfoDBus::getKeyForNetwork ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#11 0xb67524a0 in DBusConnection::networkManagerInfoMessageHandler ()
   from /usr/lib/libkdeinit_knetworkmanager.so
#12 0xb66cdf6f in dbus_message_type_to_string () from /usr/lib/libdbus-1.so.2
#13 0xb66c0fd7 in dbus_connection_dispatch () from /usr/lib/libdbus-1.so.2
#14 0xb671fee9 in DBusQt::Connection::dispatchRead ()
   from /usr/lib/libdbus-qt-1.so.1
#15 0xb67204fe in DBusQt::Connection::qt_invoke ()
   from /usr/lib/libdbus-qt-1.so.1
#16 0xb7262eb9 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#17 0xb7263954 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#18 0xb6720e67 in DBusQt::Internal::Integrator::readReady ()
   from /usr/lib/libdbus-qt-1.so.1
#19 0xb67217bd in DBusQt::Internal::Integrator::slotRead ()
   from /usr/lib/libdbus-qt-1.so.1
#20 0xb6721824 in DBusQt::Internal::Integrator::qt_invoke ()
   from /usr/lib/libdbus-qt-1.so.1
#21 0xb7262eb9 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#22 0xb72637c8 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#23 0xb75f706f in QSocketNotifier::activated () from /usr/lib/libqt-mt.so.3
#24 0xb72831fe in QSocketNotifier::event () from /usr/lib/libqt-mt.so.3
#25 0xb71f8e56 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#26 0xb71f9052 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#27 0xb78d77ab in KApplication::notify (this=0xbf8920f0, receiver=0x819cb80, 
    event=0xbf891e70) at kapplication.cpp:550
#28 0xb718a157 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#29 0xb71ea973 in QEventLoop::activateSocketNotifiers ()
   from /usr/lib/libqt-mt.so.3
#30 0xb719df43 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#31 0xb7211947 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#32 0xb721186a in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#33 0xb71f7965 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#34 0xb674e485 in kdemain () from /usr/lib/libkdeinit_knetworkmanager.so
#35 0xb7f70768 in kdeinitmain () from /usr/lib/kde3/knetworkmanager.so
#36 0x0804e173 in launch (argc=3, _name=0x81388d4 "knetworkmanager", 
    args=0x8138925 "", cwd=0x0, envc=0, envs=0x8138929 "", reset_env=false, 
    tty=0x0, avoid_loops=false, 
    startup_id_str=0xbf891520 "x\225$\b