You do need to still hold down the shift key to force it not to check the cache. The Web browsers claim they don't cache dynamic pages, but I haven't found this to be the case. Additionally, telling your browser to always fetch a fresh copy doesn't seem to work in all cases either, shift + refresh seems the only reliable method. BTW, there's a page that has a JavaScript that you can bookmark, select it on any page that you go to and it will auto fill all of the fields with anonymous (or for and email field), pretty handy if you're losing your post vars. Hope that helps.