OWA Message Reply/Forward Omits Message

There seems to be a problem with the December Cumulative Security Patch for Internet Explorer 5.5 and 6 (Knowledge Base Article 324929, MS02-068). When we apply this to a computer and then log in to Outlook Web Access, Reply and Forward both only show the To/From/Subject info -- the body of the email message does not get included. We've carefully tested to make sure it's related to this patch but I haven't been able to find anything to tell us how to fix this, and of course the patch cannot be uninstalled. Upgraded to Exchange 2000 in December too so still getting used to that. Have tested this carefully and there's no problem on a computer with an IE 5.5 or 6.0 browser that has not yet received this patch.

Any suggestions? Can't find anything at Microsoft's site on this.