Hum,
i just use the tabs anyway....i don`t usually use the backbutton.
"Firefox 1.5 implements a Back-Forward cache that retains the rendered document for the last few session history entries. This can be a lot of data...
For those who remain concerned, here's how the feature works. Firefox has a preference browser.sessionhistory.max_total_viewers which by default is set to -1. "
http://weblogs.mozillazine.org/ben/archives/009749.html
