[Zope] Images don't get cached in IE, in the presence of Apache's mod_gzip

I stumbled with a problem regarding the caching of images in Internet Explorer 6. They just don't get cached when served through Apache if mod_gzip is on, in despite of the excluding rules for that module. This problem also involves Zope, as it happen even though you had set cache properties via Zope's http accelerator manager. Has anyone else had this same problem?. How did you deal with it? According to this information http://www.nelson.monkey.org/~nelson/weblog?q=mod_gzip the problem is due to a bug in IE triggered by mod_gzip. As IE is the most used browser this can be taken as a bandwidth leak (even if we choose not to use mod.gzip) Any ideas? Ausum