Nope, back is cached in the browser.
There are two ways, prevent it with javascript, or:
put in the page u dont want to be cached <meta http-equiv="pragma" content="no-cache"> en the rest, must revalidate etc.
In this way the page must be loaded from the server.
the in that page check the referrer, if it is the last page mentioned, put the error message on the screen and die.
For exact meta statements you have to consult another resource, dont have any at hand.
Good luck mcvdmvs
"It never hurts to help" -- Eek the Cat