I have been using Fsecure for about 6 months now. It has been really impresive. I was never very happy with Norton and the other popular AV but didnt have an alternative. A friend of mine that is an engineer with an arospace company turned me on to Fsecure and i dont think i will use any thing else. I have installed it on around 20 computers and almost without fail it will find someting on machines where another program had been running. I really like the auto updates.........and i typically dont like any auto update features. it happens about once an hr and happens pretty unobtrusivly in the backround. biggest rpoblem i had was finding it at reasonable price.........it is pricey...................VSTK