There was an article in the NY Times a while ago about how Google was shifting from their "ask crazy CS questions and post puzzles on billboards" interview process to a more standardizable "algorithmic" one. I'm guessing stories like this about being asked a standard set of questions of questionable relevance are the fallout from that transition.
See it this way, Google rejected you and in doing so, its allowing you to grow and who knows you may start something and become its competitor :)
This is what i say when i get booted out in interviews :D