Hello,

This happens if you try to download files to a security-restricted area of
your computer, such as:

c:\
c:\program files
c:\windows

The files are downloaded, but will be visible only to non-Vista-compatible
applications, such as VLC player.

To see the files, browse to the folder you saved them to using Windows
Explorer and click the 'Show compatability files' button on the toolbar.

To avoid this problem, save files inside your user folder (such as the
Downloads or Documents folder).


--
- JB
Microsoft MVP - Windows Shell/User

Windows Vista Support Faq
http://www.jimmah.com/vista/