Hi yon and welcome to the forum.
These hotfixes was uploaded now, and they are just waiting to be approved:
KB817688 - "Error on a Request to Write Data to Media" error message when you use Ntbackup.exe
KB974266 - Group Policy Preferences Client-Side Extension Hotfix Rollup
This hotfix doesn't exist in PT-BR language specifically.
KB961184 - Update for Windows Search 4.0, December 2008
It was released in EN-US language only, however, possibly it will install in PT-BR Windows since it was marked as: "Language - All (Global)"
You can download it here in the forum:
KB961184-en-US.exe
Regards.