I downloaded this and installed Client security 3.1 MR9 but when I ran the program it said it was Symantec 10.1.9000.9.
How can I tell if they are the same.?
yes it is same.check the release notes
http://www.symantec.com/business/support/index?page=content&id=TECH101820
Maintenance Release 9 (MR9) This section describes the fixes in Maintenance Release 9 of Symantec AntiVirus 10.1 and Symantec Client Security 3.1. Components