Script cause KHTML to freeze

Hi,
I'm using the konq-e snapshot 20040524 and I meet a
problem while accessing some sites,
there is a dialog pop up with a message:

A script on this page is causing KHTML to freeze. If
it continues to run, other applications may become
less responsive.Do you want to abort the script?"), 

and then the process can't response for any operation,
how to solve this problem?
thank you and best regards,
Sean.

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