Traditional host-based anti-malware packages just aren’t that useful anymore, some companies say. Some companies find it either doesn’t protect against the main dangers they face from the Web or it simply doesn’t run well in virtualized computer environments. PrimeLending is now monitoring and inspecting VMs for signs of malware or attack traffic in a way it couldn’t before. The Kennedy Center for the Performing Arts in Washington, D.C. found its virus-infection flareups flare up by using a Web-networking gateway.”]