More than a third of the American public suspects that federal officials assisted in the 9/11 terrorist attacks or took no action to stop them so the United States could go to war in the Middle East, according to a new Scripps Howard/Ohio University poll.

The national survey of 1,010 adults also found that anger against the federal government is at record levels, with 54 percent saying they "personally are more angry" at the government than they used to be.

Widespread resentment and alienation toward the national government appears to be fueling a growing acceptance of conspiracy theories about the 2001 attacks on the World Trade Center and the Pentagon.

Suspicions that the 9/11 attacks were "an inside job" _ the common phrase used by conspiracy theorists on the Internet _ quickly have become nearly as popular as decades-old conspiracy theories that the federal government was responsible for President John F. Kennedy's assassination and that it has covered up proof of space aliens.

Seventy percent of people who give credence to these theories also say they've become angrier with the federal government than they used to be.

Thirty-six percent of respondents overall said it is "very likely" or "somewhat likely" that federal officials either participated in the attacks on the World Trade Center and the Pentagon or took no action to stop them "because they wanted the United States to go to war in the Middle East."