Kind of glad I did, the new version has some features the one that came with the computer didn't have. This version is supposed to alert you if a spyware or keystroke logging program surfaces, and has worm and script blocking. It also scans three instant messengers for incoming viruses, Yahoo, AOL, and MSN. Already got it running, after registering and activating it. I think this is the first time I've ever had to type in an activation code for Norton AV, normally in the past I just "registered" it online. Guess they are copying after Microshaft...er...Microsoft.
One last thing, I checked the Symantec site to see what the actual list price for the product was, and it was $49.99. I bought it at Wal-Mart for $39.33, guess I got a bargin!