[Zope] IE5.5 truncates files on upload

Hi folks, I wonder if anyone has seen this before. I have a client who has uploaded a number of PDF files using the ZMI. He complained that some of the files weren't downloading properly. So, I looked into it. I was surprised to discover that the files I downloaded from the server were shorter than the original files (which the client emailed to me). When I uploaded the same files myself, using the latest Mozilla nightly for Linux, they were fine. When I ftp-ed them up, they were fine. My client is using Microsoft Internet Explorer 5.5, build 5.50.4134.0600. The Zope is a very recent trunk checkout from CVS, sitting behind Apache using proxypass/modrewrite. -- Steve Alexander Software Engineer Cat-Box limited