Version:           3.5.6 (using KDE KDE 3.5.6)
Installed from:    Ubuntu Packages
OS:                Linux

I locked screen, and move my mouse, a dialog with three bottons appeard,
When I click "cancel", KDesktop_lock crashed:
It crashes every time.

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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1233676592 (LWP 2545)]
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[KCrash handler]
#6  0xb4e7658b in scim::QScimInputContext::slot_hide_preedit_string ()
   from /usr/lib/qt3/plugins/inputmethods/libqscim.so
#7  0xb4e7edc2 in scim::FunctionSlot1<void, scim::IMEngineInstanceBase*>::call
    () from /usr/lib/qt3/plugins/inputmethods/libqscim.so
#8  0xb4dd354c in scim::IMEngineInstanceBase::hide_preedit_string ()
   from /usr/lib/libscim-1.0.so.8
#9  0xb4d2fad3 in scim::SocketInstance::do_transaction ()
   from /usr/lib/scim-1.0/1.4.0/IMEngine/socket.so
#10 0xb4d31f76 in scim::SocketInstance::commit_transaction ()
   from /usr/lib/scim-1.0/1.4.0/IMEngine/socket.so
#11 0xb4d3276a in scim::SocketInstance::reset ()
   from /usr/lib/scim-1.0/1.4.0/IMEngine/socket.so
#12 0xb4e75350 in scim::QScimInputContext::reset ()
   from /usr/lib/qt3/plugins/inputmethods/libqscim.so
#13 0xb4ebb2e9 in QMultiInputContext::reset ()
   from /usr/lib/qt3/plugins/inputmethods/libqimsw-multi.so
#14 0xb76c4c91 in QWidget::resetInputContext () from /usr/lib/libqt-mt.so.3
#15 0xb78450e5 in QLineEdit::setText () from /usr/lib/libqt-mt.so.3
#16 0xb69d3023 in KPasswordEdit::focusInEvent () from /usr/lib/libkdeui.so.4
#17 0xb779a9c2 in QWidget::event () from /usr/lib/libqt-mt.so.3
#18 0xb7844b4b in QLineEdit::event () from /usr/lib/libqt-mt.so.3
#19 0xb69d2cd3 in KPasswordEdit::event () from /usr/lib/libkdeui.so.4
#20 0xb76faa60 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#21 0xb76fd42a in QApplication::notify () from /usr/lib/libqt-mt.so.3
#22 0xb7ebece2 in KApplication::notify () from /usr/lib/libkdecore.so.4
#23 0xb768d1e9 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#24 0xb791785b in QDialog::show () from /usr/lib/libqt-mt.so.3
#25 0x08054451 in ?? ()
#26 0xbfd91f7c in ?? ()
#27 0x00000000 in ?? ()