Symantec Antivirus 2004

I have been using Symantec Antivirus 2004 for the last several years because it came with my computer, it's been updated several times and the virus definitions have been updated almost daily but it has got stuck on May 2, 2011.  It seemed to serve me good for that time.

 

Is this product still supported and is that up to date?  Usually liveupdate would update almost every day.

 

Do I have to buy a new software if this is no longer operational or supported as it seems like the only version back in time that is supported is 2005 that I can find definitions for on this website.

 

It's either that or my system has been compromised......