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 http://www.bookmarklets.com 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 anonymous@anonymous.com for and email field), pretty handy if you're losing your post vars. Hope that helps.