[to Norton Team] Vulnerability Protection List

After I installed NIS 2010 (17.0 engine) I saw the list with program (here OS) vulnerabilities, here it is:

look at vulnerabilities count for each product

 

 

After I completely Update NIS to nowadays 17.7 version, the protected vulnerabilities is... greatly reduced!

Why? Where do they gone?))

I have windows xp sp3 32bit x86 with all updates from WindowsUpdate service.

Norton become to protect not all vulnerabilities, which it was protect with 17.0 engine?