This new utility is available from

http://www.microsoft.com/security_essentials/

It's not clear how it stacks up against third party antivirus 
and anti-malware packages.  I only heard about it almost by 
accident.

  So far, it hasn't found anything to object to on any of my 
machines.  Nor does it seem to have trouble coexisting with my 
other protections despite the usual "uninstall all other" 
warnings.
  I'd be interested to hear of any negative experiences with it 
before I start sending my non-technical friends to go get it.

David Gillett

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