Current Def set?

NIS 17.8.0.5

 

Just ran live update and it appeared I got the new def set on my Comp (Vista) it is  in

 C:\Program Data\Norton\{lomg set of numbers and letters}\NIS17.5.0.127\Definitions\VirusDefs\20110325.020

 

But when I go to the Norton website

http://us.norton.com/security_response/definitions.jsp

 

it shows the

 

Multiple Daily Updates Learn More

  • Symantec Endpoint Protection 11
  • Norton AntiVirus 2008 and newer

Virus Definitions created 3/25/2011
Virus Definitions released 3/25/2011
Defs Version: 130325b
Sequence Number: 121528
Extended Version: 3/25/2011 rev. 2
Total Detections (Threats & Risks): 11068855

 

why would mine show 20110325.020