Hey guys, I have owned the new retina for about a week now, and i've noticed that it runs hot if I use it for about 20-25 minutes. When I have it on my lap, it gets a little bit warm, but if I leave it on my sofa (leather) or my bed (cotton) it gets extremely hot after about 10-15 minutes and the fan starts running. I'm not running anything intense at all, just web browsing, and reading articles and the occasional youtube videos. If someone can help me figure out how to measure the temperature, I'd be more than happy to put those statistics up there. I feel like this shouldn't be a normal occurrence so I'm a little concerned..