Hi, I've been using and Comodo and Avast for some years. But because of the situation on the internet I decided to buy Kaspersky Antivirus. But my biggest problem is - I need a firewall, but Comodo and Online Armor is incompatible with Kaspersky AV. Currently im using Kerio, but that is only as a second solution. I can use Comodo but I will get some BSODs from time to time. OA won't even start. Currently I have 240 days left of my license, so I want change to KIS (I must admit that my next buy is a Internet Security). But does anyone use KAV with a firewall? I need a good firewall. Does anyone know a good firewall there is compatible with KAV 2009? Or does anyone know how to make OA compatible with KAV 2009? My computersoftware: Windows Vista HP 32 bit, SAS (LifeTime), MBAM (On-demand), KAV 2009.