Always the Same Recent Stumblers

Every time I log into stumble upon, it's ALWAYS the same people who've stumbled on the front page. And I know for a fact that other people have stumbled since those people on the front page. Why is it always the same people?

These aren't the most recent stumblers, they're favorites or something, which is fine if stumble upon wants to have favorites, but don't mislead people into thinking that those are the most recent stumblers.