multiple post issue

I work on a website that runs on enhydra 3.1  We are having an issue
with one of our jhtml/java pages.  When we use IE 5.5 or 6 to fill out
the form and submit it, IE might actually send multiple POST request to
enhydra which in turn runs the java page again.  If we use a different
browser, say mozilla, the page only post once and is only executed
once.  Has anyone seen this issue with IE before?

Thanks