I had noticed on my home pc it uses 72,xxxk, Windows XP. I do have 1G of ram. Here at work, Win 2000 and an old computer at that, only using 28,xxxk. Do you think there is something wrong with the set up at home? Both are enabled to monitor. I don't think it ever stops anything that MS AntiSpyware doesn't and I was allowed to install it with the work license so I really wouldn't be losing anything if I remove it.