It to the point now that a few of my Norton AntiVirus 2002/2003 installs subscriptions' are set to expire. I've heard bad things about NAV 2004; things like it has MS like activation, and that is sucks up more resource than the older versions.
So, I figure it's time to snag some new AV software. I've had bad experiences in the past with McAfee, but I hear version 7/8 is pretty good.
There's also TrendMicro and Panda. I want something that works and paying $49 for Norton AV is a retarded price anymore.
What do you use on Windows?
On Windows, I've had good experience with AVG from www.grisoft.com ...started using their free version and liked it so much I paid and registered for their 'Pro' version. To each his/her own.
I can highly recommend KAV (Kaspersky Antivirus, from www.kasperskylabs.com) as a lean, mean, virus killing machine!
However, it's best to go on something a little more objective than personal preference, so see here:
http://www.virusbulletin.org/vb100/archives/products.xml?table
;)
I love AVG too - mostly because it uses minimal system resources