MacBook Pro is frequently hot
This is a 2 year old, 15" machine with solid state drive. Recently, it's been heating up more than usual. It's not too hot to touch, but definitely hotter than it usually gets. It doesn't do it all the time, and I can't link the heat to any particular thing I'm doing or software I'm running.
MacBook Pro (Retina, 15-inch, Late 2013), OS X Yosemite (10.10)