The CUE-2 teams reported 310 different usability problems. The most frequently reported problem was reported by seven of the nine teams. Only six problems were reported by more than half of the teams, while 232 problems (75 percent) were reported only once. Many of the problems that were classified as “serious” were only reported by a single team. Even the tasks used by most or all teams produced very different results—around 70 percent of the findings for each of these common tasks were unique.
