Installed ver 4 business on Windows Home Server, server slowed down severly and I had to uninstall from server. Talked with rep at ESET, they don't know they have a problem. The server speed was fine after uninstalling ESET. Hate to run the server bare. I assumed I would be fine with ESET on the ten workstations ... not so, got hit with a nasty trojan yesterday. ESET warned but didn't stop it from installing on the workstation. Had to reset up the workstation. I don't trust EST.