Version:            (using KDE KDE 3.5.0)
Installed from:    Mandriva RPMs
OS:                Linux

If i look a video in fullscreen in konqueror all work well, but if i click on the back button it crashes with this backtrace : 


(no debugging symbols found)
Using host libthread_db library "/lib/tls/libthread_db.so.1".
(no debugging symbols found)
`shared object read from target memory' has disappeared; keeping its symbols.
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1234986592 (LWP 8810)]
[New Thread -1329333328 (LWP 8826)]
[New Thread -1320940624 (LWP 8825)]
[New Thread -1312347216 (LWP 8824)]
[New Thread -1302066256 (LWP 8823)]
[New Thread -1289573456 (LWP 8822)]
[New Thread -1280910416 (LWP 8821)]
[New Thread -1272480848 (LWP 8818)]
[New Thread -1259656272 (LWP 8817)]
(no debugging symbols found)
[KCrash handler]
#4  0xb702fd04 in pthread_mutex_lock () from /lib/tls/libpthread.so.0
#5  0xb708e02f in _XUnregisterFilter () from /usr/X11R6/lib/libX11.so.6
#6  0xb7075b08 in XrmEnumerateDatabase () from /usr/X11R6/lib/libX11.so.6
#7  0xb7060381 in XKeysymToString () from /usr/X11R6/lib/libX11.so.6
#8  0xb7aa1a99 in KKeyServer::Sym::toString () from /usr/lib/libkdecore.so.4
#9  0xb7aa209f in KKeyServer::Sym::toStringInternal ()
   from /usr/lib/libkdecore.so.4
#10 0xb7aa2145 in KKey::toStringInternal () from /usr/lib/libkdecore.so.4
#11 0xb7aa2e1a in KKeySequence::toStringInternal ()
   from /usr/lib/libkdecore.so.4
#12 0xb7aa4730 in KShortcut::toStringInternal () from /usr/lib/libkdecore.so.4
#13 0xb7aa486f in KAccelBase::removeConnection ()
   from /usr/lib/libkdecore.so.4
#14 0xb7aa4a04 in KAccelBase::slotRemoveAction ()
   from /usr/lib/libkdecore.so.4
#15 0xb7aae040 in KAccelActions::remove () from /usr/lib/libkdecore.so.4
#16 0xb7aae0e7 in KAccelBase::remove () from /usr/lib/libkdecore.so.4
#17 0xb7aae5f2 in KAccelPrivate::removeAction () from /usr/lib/libkdecore.so.4
#18 0xb79fa98b in KAccel::remove () from /usr/lib/libkdecore.so.4
#19 0xb6c91f6b in KAction::removeKAccel () from /usr/lib/libkdeui.so.4
#20 0xb6c92055 in KActionCollection::unplugShortcuts ()
   from /usr/lib/libkdeui.so.4
#21 0xb6c92122 in KActionCollection::prepareXMLUnplug ()
   from /usr/lib/libkdeui.so.4
#22 0xb6c92176 in KXMLGUIClient::prepareXMLUnplug ()
   from /usr/lib/libkdeui.so.4
#23 0xb6d62e3c in KXMLGUIFactory::removeClient () from /usr/lib/libkdeui.so.4
#24 0xb7f3a87a in KParts::MainWindow::createGUI ()
   from /usr/lib/libkparts.so.2
#25 0xb64ae876 in KonqMainWindow::slotPartActivated (this=0x81109e0, 
    part=0x84977b0) at konq_mainwindow.cc:2161
#26 0xb6467781 in KonqViewManager::emitActivePartChanged (this=0x81165c8)
    at konq_viewmgr.cc:1394
#27 0xb6467971 in KonqViewManager::setActivePart (this=0x81165c8, 
    part=0x84977b0, immediate=true) at konq_viewmgr.cc:1369
#28 0xb649cd58 in KonqMainWindow::slotPartChanged (this=0x81109e0, 
    childView=0x8345f30, oldPart=0x84fedd0, newPart=0x84977b0)
    at konq_mainwindow.cc:1976
#29 0xb64b16a6 in KonqMainWindow::qt_invoke (this=0x81109e0, _id=131, 
    _o=0xbf8876bc) at konq_mainwindow.moc:649
#30 0xb73a4f6f in QObject::activate_signal ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#31 0xb64602c3 in KonqView::sigPartChanged (this=0x8345f30, t0=0x0, t1=0x0, 
    t2=0x0) at konq_view.moc:209
#32 0xb64603fe in KonqView::switchView (this=0x8345f30, viewFactory=@0x0)
    at konq_view.cc:252
#33 0xb64621f3 in KonqView::changeViewMode (this=0x8345f30, 
    serviceType=@0xbf88794c, serviceName=@0xbf887950, forceAutoEmbed=false)
    at konq_view.cc:356
#34 0xb64622e1 in KonqView::restoreHistory (this=0x8345f30)
    at konq_view.cc:832
#35 0xb6462554 in KonqView::go (this=0x8345f30, steps=-1) at konq_view.cc:818
#36 0xb64a783c in KonqMainWindow::slotGoHistoryDelayed (this=0x81109e0)
    at konq_mainwindow.cc:3110
#37 0xb64b1ceb in KonqMainWindow::qt_invoke (this=0x81109e0, _id=184, 
    _o=0xbf887b54) at konq_mainwindow.moc:702
#38 0xb73a5009 in QObject::activate_signal ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#39 0xb77431cb in QSignal::signal () from /usr/lib/qt3/lib/libqt-mt.so.3
#40 0xb73c5ca7 in QSignal::activate () from /usr/lib/qt3/lib/libqt-mt.so.3
#41 0xb73cf2a4 in QSingleShotTimer::event ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#42 0xb7337ec0 in QApplication::internalNotify ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#43 0xb73388cf in QApplication::notify () from /usr/lib/qt3/lib/libqt-mt.so.3
#44 0xb7acc71e in KApplication::notify () from /usr/lib/libkdecore.so.4
#45 0xb732b3d9 in QEventLoop::activateTimers ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#46 0xb72dabf2 in QEventLoop::processEvents ()
   from /usr/lib/qt3/lib/libqt-mt.so.3
#47 0xb7351e29 in QEventLoop::enterLoop () from /usr/lib/qt3/lib/libqt-mt.so.3
#48 0xb7351d24 in QEventLoop::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#49 0xb733771c in QApplication::exec () from /usr/lib/qt3/lib/libqt-mt.so.3
#50 0xb644ff33 in kdemain (argc=0, argv=0x0) at konq_main.cc:206
#51 0xb6544564 in kdeinitmain (argc=0, argv=0x0) at konqueror_dummy.cc:3
#52 0x0804da06 in ?? ()
#53 0x0804e0c7 in ?? ()
#54 0x0804e643 in ?? ()
#55 0x0804f68b in ?? ()
#56 0xb6e31e40 in __libc_start_main (main=0x804e740, argc=2, 
    ubp_av=0xbf888c54, init=0x804fe80, fini=0x804fee0, 
    rtld_fini=0xb7f80e00 <_dl_fini>, stack_end=0xbf888c4c)
    at ../sysdeps/generic/libc-start.c:209
#57 0x0804b0b1 in ?? ()