I have 2 desk top PCs and a laptop.

On the laptop I run Panda (cos it came pre-installed)Desktop No.1 has Norton Internet Security (again cos it came pre-installed) Desktop No.2 has AVG (free) on it cos I didn't want to pay any more for Anti-Virus Software. All 3 use Windows XP Firewall as I found that the individual Panda and Norton's Firewalls interfered with the Networking and wouldn't allow the machines to see each other.

So far no nasties have got into my Network (Wireless)but each pooter slows down when it auto-scans and updates. I have set the auto-scans etc to run at different times so that I always have at least one machine working at usual speed.

Dave