Hi. I have an Olympus C725 UZ. I had a 128 XD card and after a year it sends an error (132F). Luckily the store where I bought the card will replace it to a new one. My question is, should I buy a 512 card or two 256? Does these errors hapen often? What should I do to avoud these errors? Can I store other files than pictures? Thanks for your help!!!