Problem: As of last night I noticed that anytime I clear cookies, the fans run loudly and my mac heats up. By loudly, I mean it sounds like it's a rocket ship about to launch- which is the only reason why I was alarmed enough to post here. I've managed to recreate this problem several times. After several google searches I'm still not sure whether there may be malware on my mac or something. How I Use My Mac: I watch tv shows using fastpass tv Watch Youtube videos Browse websites- ranging from news through to health & fitness. School Work- Write Papers, Research etc. Regularly download files from my Uni's server e.g. Lecture notes Use Facebook and Tumblr Can anyone help me figure out what's going on- why only now does deleting cookies cause the fans to run loudly?