I am running a realtime av now- VIPRE. But do I really need anything other than an on demand scanner? I am thinking MBAM and Hitman Pro on demand and the heck with the real time stuff. My OS is Vista HP 32 bit. I have UAC enabled but running with the Norton UAC Tool. 95% of my internet browsing is done with Google Chrome. The remaining percentage points are split between FF, Opera and IE8. And I download a lot of programs, videos, mp3's... Any thoughts?