At this page http://security.symantec.com/sscv6/default.asp?productid=symhome&langid=ie&venid=sym
you can receive a secutity test where often everything is OK only you are told that you need to install an AV though Avast! is installed . The only AV they know is Symantec ! Why ? :o
because they want you to buy their software 
and they do not have AVast in their list of commonly used anti virus programs.