Forever Geek has posted some interesting instructions on a quick and easy way to speed up the Firefox browser. I've tried them, and they also work fine with Mozilla (v1.7.3 anyway). The method is also an instructive peek under the cover at the browser configuration settings. There are some caveats, but most folks using broadband should see improvement. YMMV. Not that Firefox was particularly slow to start with. Another set of tweaks here.