What A/V are these users using? This was a problem right when office 2007 came out. The newer ms doc formats are actually zipped up xml files in disguise. Do these users with the problem have the Office 2007 Compatibility Pack installed? It lets users of older versions of office open new office documents correctly.
Compat Pack download:
From mstechnet:
New File Format ScenariosThe Office XML Formats change the way that customers work with data. Consider some of the following scenarios, now possible with the new file formats:
- A server-side process can read one of the items out of a ZIP archive without having to extract them all. For example, you can extract only the XML file containing the document's data without opening...
