Hi, Waller92.
Not sure what you can glean from these:
http://www.symantec.com/business/support/index?page=content&id=TECH95798(this redirects you to Symantec's bussiness product definition page, so I'm not sure how relevant the information is.)
http://www.symantec.com/connect/forums/catdb-and-virusdefs-folder