I don't get that. I clicked your link, then the first results page, and now I'm browsing result pages 10, 15, 25, 30 for some reason and it doesn't stop.
Personalization should affect ranking, but not so much the total set of results. Domain, language & safe search prefs could. I wonder if the dedup filter can vary a lot (did the results end in "similar results omitted"?).
