What makes a race frustrating?

Reading some logs at Attackpoint I was struck by how frustrated orienteers can get when they have a frustrating run. And that begged the question - what makes a race frustrating?It seems like certain kinds of mistakes are more frustrating. Say you make a 1 minute mistake, it'll be more frustruating if you're:1. Repeating a mistake you've made in previous races, especially if you've taken some