After three weeks of being jerked around with Apple's tech support and an additional three weeks with Apple's recommended third-party re-seller (nearest Apple store is 4 hours away), I finally got fed up with being strung along with the iMac freezing issue. Contacted Visa. Gave them the story. Faxed Visa the required documents - receipt, detailed records of my phone conversations with Apple and 3rd party retailer, as well as Apple's press release admitting to selling faulty machines. Funny thing is, all I wanted was a machine that worked. I pushed for an exchange but was not given one. Yet, Visa was able to secure a full refund from Apple for a machine that I purchased in August. 14 day return limit? I don't think so. Thank you Visa! F--- Y-- Steve!