Hello,
SAV 10 is a End of Support Life (EOSL) product.
End of Life announcement for Symantec AntiVirus Corporate Edition and Symantec Client Security
http://www.symantec.com/docs/TECH178551
I would request all users using Symantec AntiVirus 10 to migrate to Latest version of Symantec Endpoint Protection 12.1.
Currently, the Latest version of SEP product is SEP 12.1.3001
Check this Article:
Migrating from Symantec AntiVirus or Symantec Client Security to Symantec Endpoint Protection 12.1 or later
http://www.symantec.com/docs/HOWTO80791
For more - Check these BLOG's:
1) Latest Symantec Endpoint Protection Released - SEP 12.1.RU3
https://www-secure.symantec.com/connect/blogs/latest-symantec-endpoint-protection-released-sep-121ru3
2) What's new with Latest Symantec Endpoint Protection SEP 12.1.RU3
https://www-secure.symantec.com/connect/blogs/whats-new-latest-symantec-endpoint-protection-sep-121ru3
3) Knowledgebase Articles for Symantec Endpoint Protection 12.1. RU3
https://www-secure.symantec.com/connect/blogs/knowledgebase-articles-symantec-endpoint-protection-121-ru3
Hope that helps!!