no i don't.
except here in alabang, where every computer is connected to the net. well, i worry less, coz it's a mac. there was one time when our network was under attack, and every PC (hundreds) in the network was ill (had a virus). well, the computer geeks (a.k.a. geniuses, the likes of kitc) were able to contain the outbreak.
in my personal studio, where i use a pc, i don't. coz i can't afford to hire geeks, and i've bothered kitc quite a number of times already (and i suspect that i might be wearing him out already). haha.
@hazel, regarding virus protection, i'd always be willing to sacrifice cpu power and memory for a good night's sleep, knowing my work isn't likely to fall prey to a virus.