personally i dont like webroot,why do you want an all in one ??? many can and do hog resources,although you would knoe that most likely from having Norton.i personally use avg free as well as threatfire,for firewall i use the Tiny personal firewall,they use very little resources and ive had no problems with anything.you can if you want use spybot and immunise your system against dpyware etc and scan occasionally as well.