If CCX has such troubling flaws, why has it attracted so much support, particularly in corporate America?

The two most troubling flaws have become more so.

There are two troubling flaws in the book that make it clear it was not edited as carefully as Strother's television spots.

Alert readers will have spotted another troubling flaw in Buchanan's worldview.

Counting inmates where they live would cure what has clearly become a troubling flaw in the census process.

The failure to consider how biodiversity grows reflects an even more troubling flaw in the modern synthesis: it lacks any real sense of history.

The agency sent a team to Riyadh and uncovered troubling flaws in the screening of passengers and baggage.

Another troubling flaw is that some passages, like the one about the old China test, distort other cultures in order to make them seem familiar.

But his remarks suggest there is a troubling flaw to the American team, whether it is a problem of communication, confidence, confusion or ability to adjust once plans go awry.

Still, many e-tailers' sites "have some troubling flaws," Mr. Manning said, adding: "The single biggest problem is they don't show customers a broad array of product categories early on.