Rilasciato aggiornamento del programma Windows Defender (Beta 2)
sono stati risolti alcuni bug evidenziati dagli utenti,
scaricare quì http://www.microsoft.com/windowsdefender l'ultima release Build 1347.
Si ricorda che per poter installare il SW occorre autenticare la copia di Windows tramite procedura, pertanto risulta inutile ul download dell'eseguibile per poterlo sare su altri PC, inoltre trattandosi sempre di una versione Beta, è comunque da considerarsi un programma suscettibile di eventuali difetti.
a seguire maggiori dettagli: 

 
Windows Defender (Beta 2) Refresh - Build 1347 has just been released.

This release includes many bug fixes and enhancements including:

- The option to always display the Windows Defender icon in the taskbar notification area. This is one of the biggest customer feedback issues we have received so we are implementing this request.

- Definition update delivery improvements. We have also included changes to help address the major concerns that customers had around staying up to date with definition updates.

- SpyNet data collection improvements - allowing Microsoft to produce more effective definitions to help combat malware.

- Definition quality improvements - with every release, Microsoft enhances the quality of our definitions ensuring that descriptions, advice, category, alert level, and recommended actions are up to date to provide better protection.

- Text improvements in the UI and localization and globalization fixes to support Japanese and German releases.

* You can download the latest copy from:
http://www.microsoft.com/windowsdefender

--
Mike Chan [MSFT]
Technical Product Manager (Windows Defender)
Microsoft Corporation 

(fonte Vincenzo Di Russo)