I know that it is not good to have more than one AV installed or running at a time. I currently have Zone Alarm Internet Security with the AV and AS turned off (the AV has had major problems on ZA 7.0). It seems to be running fine with NOD. I have to renew my ZA, and had planned on dropping the AV, and just going with ZA Pro. But I can get a better deal on renewing the ZA IS than I can on the Pro. Do you think it would be okay as long as I leave the ZA AV off or may I run into problems having two AV programs installed? Thanks!