Thanks Atul Saini, but...
If i do manually update and click on AdobePatchInstaller.exe, it opens AAM again and nothing else! I don't undestand how to do and i don't find an italian support that explain me how to resolve that problem. The download instructions (Adobe - Bridge : For Windows : Adobe Bridge CS5 4.0.5 Update for example) are in english and i don't undestand what i'm doing wrong!
Anyway, thanks for help. It's difficult for me try to explain my problems in english, so don't worry and thanks again.
Bye.
Davide.