I was just checking a "link:..." query on a relatively new site and had something strange happen. I got 2 pages of results, then when I clicked next it said there were no results. Scratching my head I did the search again and this time there wasn't even one page of results. Being this is a new site, could it be that the datacenter Google has my queries going to could have changed in mid-search and the new datacenter just doesn't have the data for this site yet ?