I don’t profess to be an IT guy, in spite of working in technology, although I help my wife’s home business in this capacity.
Over the holiday she asked me to check out one of her computers because it was spawning messages that looked suspicious to her and she wanted to make sure the computer hadn’t picked up a virus.
It turned out to be messaging from a trial installation of Norton Security Scan that must have come with the computer. Because Trend Micro is installed, running and paid for a year, I told her I would erase the installation of Norton so she wouldn’t be further bothered.
Wishful thinking.
Norton has apparently installed this in such a way that it’s re-spawning outside the Windows XP environment, because I deleted it through control panel twice, only to have it re-load itself during the reboot process. Also, after the THIRD DELETION, I searched and deleted every file incidence of “symantec” and “norton” in both the directory structure and registry….and again it re-spawned. Evil. Pure evil.
Once I searched the web for “can’t delete Norton Security Scan” I found a bunch of posts about this problem, most of whom share my opinion of the malicious nature of Norton’s trial installation.
I downloaded a program designed to erase the Norton installation (symNRT.exe), ran the delete routine through XP and then ran the delete software, and FINALLY the trial installation of Norton was gone.
Needless to say, Norton is on my “do not buy” list after this. Try Trend Micro if you’re searching for a good firewall/security suite for your computer or home network.

Here’s a couple links if you’re having the same issue:
MajorGeeks.com
BleepingComputer.com
KidWithMatches is the personal blog of Pete Eberbach, VP Director of Online Marketing & Technology with St. John + Partners.