Hi I just upgraded my macbook pro from 8GB to 16GB, more than apple's recommended max amount of 8. I checked with Crucial and it was the right RAM that i bought, they said '100% compatible' I am just wondering if upgrading to more RAM can cause any problems in the macbook, i.e. hard disk failure because it can't handle it? I do a lot of video work/intensive 3D particle stuff and 8GB just wasn't cutting it. I noticed after installing my RAM that my hard drive was 'clicking' quite frequently than it used to, not sure if it is because more data is being transferred and read from my video editing and RAM extension. I might be paranoid but it is straight after I installed the 16 GB that it started, so it is making me slightly worry about the health of my macbook in the long run with this 16GB! spent over $100 on it so really hoping it won't have an adverse affect on my mac. Thanks for baring with my worries, hope someone can advise.