So I bought a MacBook for my parents to stop them watching so much TV. Got them into iTunes and iPhoto (you know, the consumer level stuff that they can easily enjoy) to introduce them into the world of OSX. The computer shipped with 512MB RAM, which I decided to upgrade to 2GB for them - to make sure the computer wouldn't need replacing for a while. I whip the old RAM out and stick in the 2x1GB from Crucial and... the computer runs slower with the Crucial RAM as in it cant even open a finder window without lagging, the minimize animation might as well not happen cause it lags so much that you dont even see it. I have been faffing around trying to fix the problem. I rang Crucial who told me to re-install the OS (why would that help? - well I did it anyway and it didn't). I did an Xbench test, which I know isn't a great test, but I got a score of 9.61 (!), with the RAM check receiving a whopping 6.36 for 2GB! My question is this... Is there anyone else who has had problems upgrading the RAM. Have Apple put something in that makes non-Apple RAM die, do Crucial not actually know how to make RAM or is it that I was amazingly sent 2 faulty chips? I am at a loss. If anyone could shed some light on the issue I would be most grateful.