I hated laptops all my life, they are expensive and very delicate, die quickly, run hot, with lower specs from a desktop, and it is less capable not to mention fixing them is expensive too. Over the years more and more people headed towards the laptop choice, everyone is using them. I see people keeping them on 24/7 , there are ads for pro laptops with huge screens and pro apps like Final Cut and Photoshop. So I thought to myself, probably finally laptops are near in quality to desktops. Like 8 months ago I bought myself a macbook 2.0 unibody, its all that great and solid. I started to notice the heat is increasing to 167F/75C watching youtube videos, so I thought this is the mac-flash problem(its irritating since a lot of the web is in flash, games, videos, and more). Yesterday I was browsing the net, and suddenly noticed the laptop getting hotter and the fans are kicking in, but am not doing anything major to raise its heat. I switched on Activity monitor, and here is what I see: FireFox CPU 49 I believe that means its using 49% of the cpu? What was on Firefox? it was minimized window of a flash video 12 min long , it was paused and it was like this for some time. I am using safari with 5 tabs on, 2 of them got youtube videos, one of 3 min and the other is in 4 min. Its using only 10 CPU only. I am not laptop expert. Is this to be expected? I am planning to run parallels, games, video editing, emulation , and photoshop using this laptop. What will happen to it then if a simple flash video is taking 50% of the cpu power? How hot will it run? I mean is this normal for a laptop? Should I just not worry and use it as much as I would like? Sometimes the heat turns up to 176F/80C . When Should I start to be worried? finally I want to know how long should my laptop life be? I am used to desktops and I know they can live up to 5 years , my imac 2002 lived 7 years!!! it was solid and great. Please advice me because I am not all that experienced around laptops.