I'm currently using Avast Pro with Network/Script/Web shield as well as ThreatFire. I want to switch back to Kaspersky, although the mem usage is really low, my system seems sort of sluggish, especially the web (browsing). I read somewhere on these forums that the settings need to be changed for the best performance/security. But I couldn't figure out which settings to change for this. Can anyone help out with the best settings for good security/less system sluggish? Thanks in adv.