Virus MALREMTOOL not dedected and blocked by NORTON

I have the Norton Internet Security version 17.9.0.12 in my computer. It automatically runs the "LiveUpdate".

Even so, my computer has been infected this morning at 9:30am (March 29th, 2012) by the virus and malware MALTREMTOOL.

 

How come NORTON INTERNET SECURITY did not catch and blocked MALTREMTOOL ?

 

Now the configuration of my computer is modified. I cannot see the files in my C: drive nor see the Control Panel links on the "Star Menu" of windows.

 

In summary, NORTON failed to protect my computer....

 

ThomasUS