What is the difference in http://www2.sandbox.google.com/ and http://www.google.com/...? Can any one know? please reply here.
Are your referring to google caffine, its meant to be faster, were google is meant to process your search request once you click submit, google caffine is meant to be processing your request as you type the terms in, so that once you hit search it has already processed and ready to display the results. But since google is typically very fast for most people, the majority of users will not find a difference, but there must be some information perhaps many layers deep or not recently indexed that takes longer to process by googles servers.