anchor.diff:  
   define service {
       service_description Load Average
  -    hostgroup_name      all
  +    hostgroup_name      infochimps_base
       check_command			  check_load
       use                 default-service
   }
  
positive.code: 
  define service {
      service_description Free Memory
      hostgroup_name      all
      check_command    	check_mem
      use                 default-service
  }
  
negative.code: 
  define service {
      service_description SSH
      hostgroup_name      infochimps_base
      check_command       check_ssh
      use                 default-service
  }
  