I bought my iMac over a year ago. It had Norton antivirus for Mac on it. It expired. I renewed.
I also have Parallels 4 on it. McAfee Antivirus is saying I need to renew it. Do I need to have TWO active anti-virus (one for mac and one for Windows?). Money is tight and I don't want to pay for a Windows anti-virus if I don't need to.