There's a brand-new source of SketchUp salvation on the Interweb, and it's a doozy. SketchUp Sages is a collection of the very best advice from some of the very best SketchUp modelers on the planet. These kind, expert souls have put together a one-stop place to look for all kinds of answers and it's great.
The site starts with a section that answers the question, "How do I make SketchUp run faster?" ...and it only gets better from there. If you consider yourself a SketchUp enthusiast, you owe it to yourself to visit this site ASAP.
Posted by Aidan Chopra, SketchUp Evangelist