You all have it on the head:icon_thum The back button will almost always take you the cached version on your machine. This is the intended behavior by almost any browser and most webpages
At least, on IE you can change the default behaviour in some cases, haven't had a chance to test it. On FF I can't find the setting.
There is also a theorical way the force the getting of a new page on the back button. But there are several ways to do this, but I suggest that we would not want this behaviour on this site without some very extensive planning and a very contolled set of circumstamces that we want this to happen.
So My recomendation at this point is just remember that the back button does just that gets the previous page without going back to the host. If you need that page updated after the back button, just do a refresh.
Sometimes it is just better to leave things alone,:rotflm: