In the 2004 survey, 52 percent of the correspondents complained about service, a spokesman said.
A recent survey of junior high school students found that 70 percent complained of loneliness.
In the latest poll, 52 percent of the Japanese also complained that the United States had not done enough.
In surveys in the 1999-2000 season, a majority favored the video, but 27 percent complained.
Up to 15 percent of adults, and 30 percent of the elderly, complain about sleep.
A study of 114 members of Congress has found that nearly 95 percent complained that the legislative process was "too chaotic."
In one study following women through menopause, 50 percent of the participants complained about hot flashes but only 16 percent felt they were really bothersome.
Of those who gave feedback about Travelocity, he said, 57 percent complained, versus 48 percent before the attacks.
Another 10 percent complain about inclusion of the religious or "non-Zionist" parties without offering a solution.
He said 80 percent of the patients who came to him for marital counseling complain of adultery.