Can't exclude few pages
 

Encore moi,
J'ai remarqué que je ne pouvais pas exclure certaines pages de mon site...
Je clique sur le sens interdit mais rien ne se passe...
(Pour la majorité ça se passe très bien mais quelques pages se rebellent ;) )
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I don't know why but I can't exclude a few pages of my site...
I click on the "forbidden" mark but nothing happens.
Any explanation ?

Have you tried using a robots exclusion?

Yes, with robots.txt it's ok.
But I just want to know why it doesn't work in update page...