I’ve moved away from using FireFox as my browser – it’s too slow to start, too fond of updating – and now have Google Chrome on my PCs. It’s not properly available for the Mac yet, so I’ve switched to Safari, which is reasonably quick to start, and gives you more of the web to look at than FireFox. However, it does have an annoying habit of spawning new tabs EVERY. SINGLE. TIME. YOU. CLICK.
Glims is a very useful free add-on that enables you to fix that, plus you can easily add Google UK as a search engine, and there’s a nifty full screen mode too.