I have used all the Symantec products for years in many PCs. Starting with
their 2004 products they began having problems. Their 2005 products are
plagued with installation and especially uninstallation problems. I purchased
$400 worth of NIS2005 for my PCs. I had a number of problems. After 10 years
of Norton products I was very comfortable with their on-line Knowledge Base
support. But even it was not prepared for the flood of problems during the
past month since the 2005 products have hit the market.
There are many competitive products out there that are more effective, and
less expensive than Norton. I have tried a number in the past month, and am
happiest with ZoneAlarm firewall and Kaspersky anti-virus.
If you are still unsure about Norton just surf some of the different
Forums(XP,security,AV, firewalls, etc) that you can find thru Google or
Yahoo. I learned too late that they are full of complaints about Norton's
2005 products. Good luck.