I tried using a 3 pt lighting (instead of GI) but the physics calculation slows down so much it is really almost stalled. It's a pretty simple animation - a ten letter logo with each individual letter dropping to the floor using a directional force, bouncing alittle and then coming to rest. My CPU isn't slow, it's a dell inspiron 8600, P 1.7, 1 G, 256 MB video ATI card. Any ideas or is it just limitations of the software?