Propagandas de Viagra, etc no Ajax ShoutBox

[Ana Paula]

Gente, tenho um site que está me deixando doida... Instalei o Ajax Shoutbox (free) e toda vez que coloco o modulo publico, com ou sem registro pra postar, ficam aparecendo mensagens como:

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Alguém sabe o que eu posso fazer para poder ter o modulo publico (pra que vejam os recados) sem que fique aparecendo estas mensagens??? H E L P ! ! !