When surfing with konqueror on some websites (not all websites with flash animations), nspluginviewer crashes with the following backtraces :

Vérification au démarrage de la configuration du système désactivée.

 [?1034hUsing host libthread_db library "/lib64/libthread_db.so.1".
[Thread debugging using libthread_db enabled]
[New Thread 0xf698c6d0 (LWP 15387)]
[New Thread 0xf3583b90 (LWP 15396)]
[New Thread 0xf3e6bb90 (LWP 15395)]
[New Thread 0xf466cb90 (LWP 15394)]
[KCrash handler]
#6  0xf6f7bef7 in XtRemoveTimeOut () from /usr/lib/libXt.so.6
#7  0xf5ee7db1 in ?? () from /usr/lib/browser-plugins/libflashplayer.so
#8  0xf5edd338 in ?? () from /usr/lib/browser-plugins/libflashplayer.so
#9  0xf5ed6181 in ?? () from /usr/lib/browser-plugins/libflashplayer.so
#10 0xf5eda937 in ?? () from /usr/lib/browser-plugins/libflashplayer.so
#11 0x080c99a8 in ?? ()
#12 0xff91add8 in ?? ()
#13 0xff91ada8 in ?? ()
#14 0xf6e01da1 in operator delete () from /usr/lib/libstdc++.so.6
#15 0x0805b7b5 in NSPluginInstance::destroy ()
#16 0x0805d86d in NSPluginInstance::~NSPluginInstance ()
#17 0xf751f989 in QGList::remove () from /usr/lib/qt3/lib/libqt-mt.so.3
#18 0x0805656f in NSPluginClass::timer ()
#19 0x08056611 in NSPluginInstance::shutdown ()
#20 0x080593b9 in NSPluginInstanceIface::process ()
#21 0xf76ed3b0 in DCOPClient::receive () from /opt/kde3/lib/libDCOP.so.4
#22 0xf76f1f04 in ?? () from /opt/kde3/lib/libDCOP.so.4
#23 0x080a4ee8 in ?? ()
#24 0xff91b114 in ?? ()
#25 0xff91b10c in ?? ()
#26 0xff91b104 in ?? ()
#27 0xff91b0fc in ?? ()
#28 0xff91b0f4 in ?? ()
#29 0xff91b0ec in ?? ()
#30 0xf7520e7c in qt_check_pointer () from /usr/lib/qt3/lib/libqt-mt.so.3
#31 0xf76f28f3 in ?? () from /opt/kde3/lib/libDCOP.so.4
#32 0xff91b1e0 in ?? ()
#33 0x00000001 in ?? ()
#34 0x080f5f70 in ?? ()
#35 0xf76c8ff4 in ?? () from /usr/lib/qt3/lib/libqt-mt.so.3
#36 0x080bed80 in ?? ()
#37 0xff91b184 in ?? ()
#38 0xff91b198 in ?? ()
#39 0xf720f0ac in QApplication::internalNotify ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#40 0xf76ff130 in KDE_IceProcessMessages () from /opt/kde3/lib/libDCOP.so.4
#41 0xf76e5754 in DCOPClient::processSocketData ()
   from /opt/kde3/lib/libDCOP.so.4
#42 0xf76f2608 in DCOPClient::qt_invoke () from /opt/kde3/lib/libDCOP.so.4
#43 0xf726d8ad in QObject::activate_signal ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#44 0xf726e350 in QObject::activate_signal ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#45 0xf75a24a0 in QSocketNotifier::activated ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#46 0xf728b3f0 in QSocketNotifier::event () from /usr/lib/qt3/lib/libqt-mt.so.3
#47 0xf720f0ac in QApplication::internalNotify ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#48 0xf720fe96 in QApplication::notify () from /usr/lib/qt3/lib/libqt-mt.so.3
#49 0xf78b9ee2 in KApplication::notify () from /opt/kde3/lib/libkdecore.so.4
#50 0xf7203521 in QEventLoop::activateSocketNotifiers ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#51 0x080558c7 in QXtEventLoop::processEvents ()
#52 0xf7225c30 in QEventLoop::enterLoop () from /usr/lib/qt3/lib/libqt-mt.so.3
#53 0xf7225ac6 in QEventLoop::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#54 0xf720ec1f in QApplication::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#55 0x0805a855 in main ()