Yeah. I must say though, 2009 is much less of a resource hog and I've noticed it is faster too. Still I swear I spend half of my day looking at a little bar saying "Rebuilding..."
It's a pretty boring answer, so I'll answer it.
Solidworks is a CAD program, basically I make stuff in it. After you make the stuff though, when you show it to your boss or client, you generally render it. So, instead of a gray "clay" looking model, you have something that looks fairly real, or even photorealistic if you spend some time on it. Solidworks has a built in renderer, but its kinda crappy, so I use Blender. But when you render it takes up all your computers resources...because it mimics the way light reflects and all that jazz. Even on a fast computer, a complicated final render sometimes takes 15-20 minutes for me.... and leaves a computer so hot you could fry an egg on it.
