Why does Norton 2009 ignore MyWebSearch ?

So I have been hearing that 2009 is supposed to be much better, so i decided to actually test this claim.  The first test I put any security software to is detecting and removing MyWebSearch.  So I went through the trouble of readying a virtual machine, installing and updating vista x64 all the way.  Then I install the 15 day trial of Norton 2009 Antivirus.  I am impressed by the speed and excellent user interface design.  Next I install MyWebSearch from the  website Smileycentral which is known for previously distributing known malware.  Norton detected absolutely nothing when I installed MyWebSearch.  I did a full scan, and still nothing detected. Norton goes so far as to consider tracking cookies more of a threat then MyWebSearch, I find that extremely perplexing. 

 

I searched this forum and it seems everyone agrees that MyWebSearch is a problem program.  So why doesn't Norton detect it?  What should I tell my customers that buy this software when I tell them that Norton won't alert you to the most common peice of questionable software in the world?  This is a serious post I am not trying to start a flame here, I want a serious answer.  What is the logic to removing cookies but not MyWebSeach?  Not even notifying the user it could be a potential problem?  Does Symantec provide a seperate tool for removing MyWebSearch? I am so confused because this 2009 edition has been hyped for its superior ability and the fact that it changes from the old ways of Norton.