http://gizmodo.com/gadgets/software/windows-vista-destroys-photo-metadata-235461.php

bad news about Vista if you're a photographer. Apparently if you tag a photo's metadata in Vista, it destroys other important metadata used by image editing apps such as Photoshop. Microsoft's gotten reports of RAW files generated by Nikon cameras being unreadable after being tagged with Vista or Microsoft's Photo Info tool.