Jeremy Herve on "[Plugin: Jetpack by WordPress.com] Hoje, todos os meus sites caíram após atualização do plugin Jetpack."

Hi there,

I have translated your message with Google translate: http://translate.google.com/

Today, all my sites fell after updating the Jetpack plugin, depurei one by one the plugins to get the jetpack, removed, the sites retued to normal. I can not over use it. I do not know the reason yet.

Could you try to log in to your sites via FTP or CPanel, and delete the existing Jetpack plugin folder, and reinstall the plugin manually as explained here:
http://codex.wordpress.org/Managing_Plugins#Manual_Plugin_Installation

You'll find the Jetpack plugin folder here:

wp-content plugins jetpack - DELETE THIS FOLDER

If you're not sure how to do this, you can ask your hosting company for help. They should also have documentation explaining how to edit or remove files from your site using FTP or a File Manager in your admin panel.

Let me know how it goes.