Still on my Mac G4, I use Norton Antivirus v10.1.2 (from 2005) & LiveUpdate v3.5 (also from 2005). But at the page, “http://buy.norton.com/estore/mf/upgradeRenewalsfid=Gvn2NQYW7ZdbG10sL2kc45pPnX0Fv5LQFFGT6Wq5nwnPGtjhvfpz!1797098669!1297111286165”, when I select Norton Antivirus for Mac, then nothing happens. Frustration to no-end! Praytell me, “What should I do?” Thank you, one at Norton. 