Going on, let's see now, about 3 years for me with AVG!
With KERIO personal firewall and AVG, have not had so much as one single serious issue, great combo for me and XP Pro!
AVG updates simply won't quit, they update that AV proggy like there is no tomorrow, you gotta love it.
KERIO is simply amazing for me also. No incompatibility system issues either like i used to suffer from with other firewalls. Both are mainstays on my system.