I have three mac's a 13"/ 15"/ laptops and a 17' desk top. The 13 and the desk top have worked reasonably well, just a few problems. But the 15" lap was only three months old and I had to replace both logic board and Hard drive. Now I am getting the bbd way to often, especially when I am using preview. I think it's a processing problem. When the holiday's are over i will take it in for look see. My problem here is why,why is this happening? Apple is supposed be so good. But give me a break here, the 15" is not even six months old and to add insult to injury, Apple will not replace my 15" until I have three major problem's and because I had both the logic board and HD done at the same time, that is considered as one. Next insult is a warranty for $399. to extend my one year that I now have. What next?I like Apple and will continue to buy there products, but, please give us a break. The 15" is a 10.6.5/2.4 GHZ/4GB memory.