Vista's UAC suspicion of downloaded code (and other files) manifests itself as a warning on each such file, cropping up when you open them. I usually see this when I download sample code, open the VS .sln, and collapse under the slew of warning windows.
Ideally, my antivirus software would have a setting to remove these values after a successful scan, or at least prompt me. It doesn't.
The fix, like so many fixes, comes from SysInternals. The underlying problem is that the downloaded files have been associated in NTFS's mind with the "main unnamed data stream". Si's streams utility strips off this association, and will do it recursively:
streams -s -d .
The "." for current directory is necessary.
I must have Googled and re-learned this a dozen times.
Arizona Diamondbacks beat Angels, 3-2 - AT THE PLATE: Matt Joyce, who entered with a .181 average, reached on a shift-beating single to the left side of the infield to lead off the fifth inning, ...