USNA69,
I haven't had that problem at all. What browser are you using? What version is it? Does it ever happen when right click and select back, or is it only when you hit the back button? Also, if you have the forum as your home page, you may not be updating the cache that is stored on your computer. Something to try would be to delete your browser history and cookies. If you are using MS Internet Explorer, click on tools, then Internet Options, then delete browsing history and cookies.
Hope this info helps!!