I was writing my post for today and started to receive this message when try to save: "You don't have permission to access /wordpress/wp-admin/post.php on this server.".
After I revised server's file permission, and re-installed WP, I tried to re-write the post by pieces, and find that there was only a phrase that made the problem: "La culpa de los destrozos la tiene principalmente el grosor del pelo de la barba, yo directamente no me afeito: me podo." So, I modified the phrase and WP allowed me to post. That's an strange thing...
Â¿May be this a bug in WP?
(Sorry about my poor english, I'm spanish and has passed too much time from the last time I practised this language).