Ever conduct a search and see that you have at least ten pages of search results to browse through but then, as you get to page 4 or 5, Google cuts down those ten pages to only 4 or 5 pages? Here is an example, search for [lockeeeer] and you will see one through nine pages of results at the bottom:
But when I click to page five, I get stuck there:
Why is that? In this case, does it have to do with Google possibly first including "omitted results" in the pagination and then removing them when you click forward through the search results? Or is there just this ongoing pagination bug for some search results?
Forum discussion at Google Web Search Help.