Not sure if this is a Wordpress MU caused issue or server issue, but our web hosting buddies told me to check here. My users can upload .docx files to there posts, but when someone goes to download them, they somehow convert to .doc. I can't find documentation on this happening to anyone else anywhere.
Elsewhere on our site on the same server, we are able to upload docx files for download with out any problem. In fact, the link to download the docx files are in a regular single user install of Wordpress. We did have to modify the root htaccess file to get that to work properly with some mime information.
The only think I can think of is maybe the subdomain usage of Wordpress MU is affecting things, but even then I would have no idea how. Please help!