I currently have a brand new 13" Macbook Pro (with the i5) with a 14 day return policy sitting next to my 2006 Macbook...I was excited about my new laptop until I started to look into comparisons between the i5 and i7 which lead me to a lot of complaints of overheating. My old Mac has never let me down and as I type this it is sitting on a pillow which is the only time I ever hear the fan run loudly, which makes me worry that perhaps I am buying a lemon and would be better off building up the computer I have...Any thoughts would be welcomed, thanks!