BUG in Vista's zip folders: you can copy files in a protected loca

if you copy a file from a zip folder to a protected location such as
c:\program files\, the copy is done with success but the files are NOT copied.

Windows Vista SP1

Reproduction steps:
1. double click on a zip file
2. select a few files, right click and select "copy"
3. go on c:\program files
4. create a new folder named test, confirm the UAC prompt
5. go on c:\program files\test, right click and select "paste" in order to
copy the files
..... and the copy is done with success, but the files are NOT copied!!!