2006 - MySQL server has gone away

select distinct p.products_id, p.products_image, p.products_price, p.products_tax_class_id, pd.products_name from products p, products_description pd, products_to_categories p2c, categories c where p.products_status = '1' and c.categories_status = '1' and p.products_ordered > 0 and p.products_id = pd.products_id and p.products_id = p2c.products_id and p2c.categories_id = c.categories_id and pd.language_id = '2' order by p.products_ordered desc, pd.products_name limit 3

[XT SQL Error]