Hacker News Reader

Same here, and when I hit page 20 it changed to "Page 20 of about 198 results (1.22 seconds)"

Similar for me.. 8-10 billion results, then on page 21, "Page 21 of about 205 results" and no more pages after 21.

But if I click the link to repeat the query without truncating the results do continue beyond page 21.