I think that, with my next Macbook, I'll go ahead and buy applecare. I've had the computer under 2 years, and I'm awaiting the the 2nd replacement adapter. Don't know where the first one failed, but the second one must have a loose connection in the magnet/plug area. It takes some playing around with it to get the power light to come on. And at up to $90 for a replacement, it doesn't take long to pay for applecare This time I'll keep all the boxes that it comes in so if it fails before the year is up, I'll be able to get it replaced under warranty. After reading reviews, I didn't want to risk the $20 replacements listed on Amazon. I don't want to risk sparks or shorts damaging the computer proper.