Network Trust level setting- Norton Internet Security 2010

I am having trouble with the network trust level setting in internet security 2010. I have set the trust level to protected and it keeps reverting back to shared over and over. I am running Windows 7 home premium 64 Bit. I do not have file sharing enabled , or network discovery on. The windows network is set to Public.

Any suggestions on how to fix this, or why is keeps wanting to change itself?

 

 

Thanks in advance!

 

 

Tom C

Chicago