AV will be updated every day and revisions ,Once in every 4 hours symantec

you can check the latest defs here

http://www.symantec.com/security_response/definiti...

latest i see here is 

Behavior-Based Protection

OK, thanks Rafeeq. Interesting that SONAR doesn't update more frequently.

We submitted a SONAR false-positive exception request on 3/2/2013, and I'm wondering how long we'll have to wait until that exception takes place. With our existing SONAR definitions are the most current (3/1/2013 r11). We'll continue to monitor for a SONAR update. Thanks again.

Yes, that is the correct date for SONAR. It is not updated regularly like the others. More like every couple of weeks. The piece that updates is their internal whitelist.

Wait till you get a confirmation email from Symantec about your false positives.

They would mention the Release date of the defs where its fixed in the email. once you get that, You can update the defs.

Have  a good weekend..

Hello,

File-based AV - Updated daily (with SEP's Multiple Daily Definitions, certified content is typically released three times a day Monday through Friday; one time per day on weekends).

Network-Based Protection (IPS)- SEP Security Updates (SU) are generally updated on Weekdays (M-F - no releases scheduled for weekend or major holidays in the United States).

Behavior-Based Protection / Proactive Threat Protection - There is no set schedule.  The article linked below contains additional information.

Reputation-Based Protection (Insight) - Continually updated as it is a cloud based detection.

For additional details please visit: http://www.symantec.com/security_response/definitions.jsp

Reference: 

How often are Endpoint Protection definitions for IPS, SONAR, and Download Protection released?

http://www.symantec.com/docs/TECH178271

Secondly, check this Thread : https://www-secure.symantec.com/connect/forums/live-update-23

Hope that helps!!