In a conference call yesterday with stock analysts, Mr. Roth revealed a troubling finding for Nortel's business and the industry in general.

"These are extremely troubling findings," Mr. Thompson said in telephone interview.

Dr. Orfield said that a particularly troubling finding in the report was the increasing segregation in suburban schools.

He told me that he understood by early 1968 that his report, with its troubling findings, might never be released.

The most troubling, though unsurprising, finding of the report was the burden on low-paid native workers.

Despite such troubling findings, the "rebound headache," as it is known, has yet to be widely discussed.

This is a troubling finding for an industry that has always argued that the high initial cost of these plants would be offset later by low operating costs.

But the most troubling finding was that the company, rattled by falling interest rates in 1998, improperly delayed taking nearly $200 million in expenses.

Among the more troubling findings, the researchers said, was that some of the riskiest alcohol users, binge drinkers, were the most likely to say they had driven while impaired.

One of the most troubling findings for Democrats was that a large segment of young people abandoned the party this year and, in fact, did not vote at all.