From most of the disclaimers I've seen, most credit
cards double the manufacturer's warranty up to xx
days (usually 90-days) for free - if they offer any
extension.
You may want to check with your credit card company
.. and get it in writing.
No, that is simply not correct. Most credit cards double the warranty for one year. If it's one year, you get two. If it's three years you get four. AND good VISA cards also allow you to buy the extended warranty (visa performance guarantee) which is, imo, the best deal I've ever had with anything like that. I've used it many many times and it's always superbly hassle-free and easy - more so than dealing with apple. I hope this doesn't get deleted...
Surprisingly there is no catch, just benefit. I've had ipods, printers, computers, LCDs and what not either repaired or replaced through VISA both during their free year and through the purchased so called performance guarantee. Master card and Amex double the warranty and VISA doubles it and allows you to purchase an extended one after the free extension year.