I had a lot of problems with my last 15" calssic macbook pro; 3 logic board failures and a hard drive failure to be exact. On the final logic failure, an apple genius tried to convince me that the 4gb CRUCIAL aftermarket RAM (that I added after the first failure) may have been responsible, possibly "shorting out the motherboard", which sounds like a load of BS, but I just wanted to confirm that here. After a long debate with apple, theyre replacing my old faulty MBP with a new 13" Base MBP. I was planning on buying 4gb RAM and a 500gb WD HDD on newegg and installing them, but I wanted to make sure that replacing these components isnt going to cause any meltdowns on my new computer. Also, I have my old computer backed up on a external disk via time machine, so i just pop in the new 500gb WD drive, run the disks that came with the laptop, then plug in my external once leopard starts up?? would this work?? thanks guys, huge help.