Title pretty much says it all... I have a super-small solid-state drive on my netbook, so "size" is the primary consideration driving most of my software decisions. I get Symantec 12.1 AntiVirus for free through work, but have also used the free versions of Avira and Avast in the past. The netbook is running WinXP Home, and I'm familiar with chaslang's excellent "How to Protect yourself from malware!" thread... just wanted some opinions on footprint. Thanks in advance.