User-agent: Mediapartners-Google
Disallow:

User-agent: Googlebot
Disallow: /admin/
Disallow: /lib/
Disallow: /plugins/
Disallow: /system/

User-agent: holmes
Disallow: /admin/
Disallow: /lib/
Disallow: /plugins/
Disallow: /system/

User-agent: NetSprint
Disallow: /admin/
Disallow: /lib/
Disallow: /plugins/
Disallow: /system/

User-agent: *
Disallow: /