I was doing a tutorial (http://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro/Quickie_Render) and it says to press F12 anytime and I did that and my computer froze. Nothing on the keyboard worked, mouse, etc - everthing FROZE. I was forced to reboot.
Computer is a micron with nvida but as far as I know, it running fine, has been for years.
Anyone had any problems with the rendering?