I have been previewing a website I am making in several browsers. All are ok except that Firefox defaults to a previous version of the site I have on my PC. When trying to clear the cache the tools drop down refuses to react when I ask it to clear cache now, the browser hangs and an error message tells me a script is running, cannot recall what it says right now. What if anything can I do ? Firefox is my browser of choice, although it appears to be getting increasingly slow starting up these days.