[Zope] squid and zope's inheritance

[Adam]

I really like the http cache manager that comes with zope, its a great
idea.  The only problem I have is that if you use zope's inheritance,
you end up with stale pages in the cache.  If I change file.html, it
only gets purged as /file.html, and so when anyone accesses
/subdir/file.html they still get a cached version.  Is there any way to
work around this besides not using inheritance?

Thanks
Adam