Why is Norton IS 2009 not finding System Security 2009 malware?

I have a 3 subscritpion, fully up to date Norton IS 2009.  My son has one license running on his laptop and yet he still got infected with this malware.

 

Why doesn't Norton detect and/ remove this?  This has been around for many months now.  I got on to the Norton support chat line and all they wanted to do was charge me $200 for them to fix it.  Having already paid to have Norton protect my computers, I was not very impressed.

 

i know that i cannot be guaranteed 100% protection as new viruses (virii?) are appearing all the time, but when something has been around as long as this, it should be found.

 

I eventually got rid of it (I think) using a mixture of Kaspersky, GMER and Malwarebytes.

 

I am now very nervous about how protected I am with Norton - I doubt I will go with them again.