If you look at the Search box to your left, you'll see that I've installed a new one. The old one was good as long as the site only had a dozen pages, but over the months just couldn't cope.
Still, the price was right ( i.e. free ) so no complaints. Feel free to e-mail me if you strike any problems with the new one (the price on this one was also right). The index should be updated approximately daily, but I might have to set it to weekly instead.