What are the differences between NIS 2010 and NIS 2011?

Can someone list the specific benefits/features of NIS 2011 over NIS 2010?  Or, refer me to some comparison charts to review?.

 

From reviewing the Norton website, there appears to be very little functional difference between the two.  The interface has changed but that is not worth the hassle of the upgrade. By functional, I mean better or more protection.

 

Thanks