Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20) after 5 days of real world use I have decided I am going to return my new MBP. The glass/gloss screen doesn't work for me. Before returning it, what should I do to make sure none of my personal information on it could be read. Is a format an reinstall of leopard good enough? Thanks.