Nos fóruns do windows seven :
It's possible to turn off the recent items in the jumplists of specific programs. But it's a laborious process. I will describe it, but you'll have to do the legwork.
The Jump lists for each program are stored in
C:\Users(User name)\AppData\Roaming\Microsoft\Windows\Recent\AutomaticDestinations
as automaticDestination-ms files with random names.
To figure out which file belongs to which program , you'll have to do some detective work.
For instance, you could open a video with your media player program.
Change the AutomaticDestinations folder into Detail view and Sort by Date Modified.
Only one or two of the files should be showing as modified in the past minute. One may be a list of recently viewed folders, the other should be your program.
Delete one of the files then try to open your program's jump list. If it is gone, you have the right file.
Once you have identified the right file, restore it from recycle bin and set the file properties to Read-only. This will disable the jump list for that file. You'll need to do this for all the programs you want to exclude from jump lists.
As you can see, this would be a long and lengthy process, you'd be better off creating a password protected user. Good luck.
A Guy
Espero que ajude!