I can't install the help package from the new LibreOffice Release (3.6.1) LibO_3.6.1_Win_x86_helppack_de.msi, cause NAV deletes it with a "WS.Reputation.1" found message.
The installer for the main program is fine with NAV.
I downloaded the Installer directly from LO: http://www.libreoffice.org/download/
Frankly I don't believe that the official LibreOffice installer is infected.
System: Win7 64bit, German Version