Yes, I updated Woocommerce to the latest version and WP to version 4.3. Just after updating the problem started. Disabling the plug-ins: no results.
I just found a CSS code and that works fine, the problem has been resolved. Maybe useful for other people, this is the code:
body.post-type-archive-product.woocommerce .woocommerce-info{ display:none;}
Thanks.