Things that make you go "Hmmm..."

[LeBo]

I use NOD32 on my machines and never have seen any slow down. Uses about 20k of memory. I've used it for 2 years with no issues..

[NeoGen]

The company I work at has two layers of security, the first being a quite good firewall and proxy system called IPCop (http://ipcop.org/), the second one being the content filter eSafe (http://www.aladdin.com/esafe/).
Only after the net traffic is scanned by those two, it reaches our computers. We rarely get any kind of virus, and the last couple of times I remember they were brought inside and not downloaded (usb pens/laptops from outside the network, etc)

[Steve Lux]

Went back onto standard startup again last night. Had to clean out only a few viruses, but I'm back to safe and secure slow going (Cosmo ~ 5 hour WUs - up from just over 4 hours per WU). MJ-12 seems to be only now getting back up to my old speed (~ 1 meg URL's per day). I hit about 1.8 meg URL's on the one day I went without Norton's. My system was really starting to slow down last night so I knew I had been hit by a virus.