[Zope] IE caching issues

[kosh]

Not sure if this is a zope issue or not. I have some people doing work on
a site developed in zope however ie is often showing the wrong version of
the page. I followed the caching instructions in
http://www.zope.org/Members/htrd/howto/caching and it works on every
browser except ie. I have checked and they have set the browser to check
on every page view however often it does not even hit the webserver. I
have had them hit reload while watching server logs and no connect was
attempted. I then tried it in vmware using nt 4 with ie 5.5 and it does
the same thing also. Even when the cache is deleted on ie and it is told
to run with no cache it seems to cache the documents somehow. It seems the
only solution is rebooting windows on their machine which is not a good
one or using some version of netscape.

If someone knows why this is happening I would really like to get it
solved. If I could get away with having no ie support I would but alas
that is not an option I have. :(