According to this Symantec KB the 12.1 version should only keep one instance of the virus definitions. The older versions were set to keep more than one.
http://www.symantec.com/business/support/index?page=content&id=TECH141811
According to this Symantec KB the 12.1 version should only keep one instance of the virus definitions. The older versions were set to keep more than one.
http://www.symantec.com/business/support/index?page=content&id=TECH141811