Kaspersky's Security for Virtualization pushed to XenServer and HyperV

Pros and Cons

Designed to function as a virtual appliance, the tool is able to manage basic security protections such as antimalware and firewall policies... the appliance eliminates the need for a traditional client package to run on each VM.

This looks like a mixed bag. While it conserves resources and simplifies management, it presents a single point of failure. A basic tactic to be taken with AV products is to run different products on different machines (i.e. Symantec on workstations and McAfee on servers). Too, I wonder how well this product will play with other security apps. Unfortunately, I doubt I will get to play with this any time soon... it does look interesting.