Safety Minder disconnected or disabled

Hello,

 

I have this message "Norton Safety Minder's web browser monitoring component is either disconnected or disabled. Please restart the web browser or restart your computer" sent to me by email.  This problem occurred every few days.

 

What is causing this problem?  How can I solved it?

 

This problem occurred on this particular computer using the following.

  Norton Safety Minder Version 2.1.0.37

  Windows 7 Home Premium Version 6.1

  Norton 360 Version 4.3.05

 

I do not have this problem on another computer using Windows XP, SP3.

 

Regards,

Tong