Here's a quick tip for you Mac users who are going to be downloading Firefox 3. 5 today. Give this optimized version , named Shiretoko, a try. It's only for Intel Macs, but it's supposed to speed up boot time and whatnot. I don't know, I use it (along with this icon pack ) and, all things being equal, I think it works just swell. So give it a shot!.