NIS 2010 - Download Insight always shows "Uknown"

Just recently my Norton Internet Security 2010 has started showing all program downloads as "Unknown"...even Microsoft downloads.  It worked fine until about a week ago.

 

Has anyone else had this problem?

 

Would reinstalling NIS help and can I do this over the current program to preserve my settings or do I need to remove it first?

 

Any help would be appreciated.

 

Thanks

 

Graham