Hope I'm not confusing with my title but I had one worry about my early 2011 13 inch Macbook Pro. Since I bought it I have upgraded the ram to 16gb and have a 240GB Crucial SSD installed. It runs fine but whenever there is a software update or if I use virtual box to try out other Os's the fans go on high. I have noticed my wife 2012 Macbook Pro (non retina) doesn't do this type of behaviour. The fan is clean inside so I know thats not an issue. Long story short is this type of high fan use a symptom of anything bad?