Fabio,
URLs should not have question marks in them, unless it's to specify a query string. If you look at pages from your site that don't use a ? (or have it at the end of the URL), things seem fine:
http://www.capimgrosso.net/noticias/noticias-locais/fabio-ramos/item/3658-samuel-celestino-contra-brasileiro
http://www.capimgrosso.net/noticias/noticias-locais/fabio-ramos/item/3660-o-que-pensam-os-prefeitur%C3%A1veis?
Facebook is simply having trouble understanding what that URL is, and isn't able to decipher it. Things like that will also cause problems for search engines and anything else that automatically scans your content. I'm not sure what SEF extension you're using, but it shouldn't be generating the ? in the middle of a URL like that. You may need to exclude ?, but you may need to explicitly force it from using the ? in the URL.
My guess is that you were having this issue on the site before the transfer, but didn't notice it with the URLs you were testing.
Hope that helps,
Alex