Django 1.4 Form Wizard and browser back button document expired

[Laura Morgan]

Hi,

Working on a 3 step process, using a SessionWizardView class in Django 1.4 Form wizard.  In IE (mostly, although have seen in other browsers), If user hits browser back button instead of the form PREV button, in some cases it gives "Document expired".  This probably isn't a wizard thing, but just wondering if anyone has dealt with this.

Thanks