Senators in Washington question why we didn't mobilize against vague warnings of a terror attack.

She took it upon herself to give you a vague warning.

Nor should a serious discussion of the Bush administration's conduct be cut off every time a vague new warning is issued about another possible attack.

He had heard this before: vague warnings from the Investors, intended to freeze humanity at its current level of development.

And despite central bankers' vague warnings of more interventions, there were none.

And given his life style, a vague warning would have served no purpose.

He became conscious of a vague, persistent warning that plucked at his mind.

But others say such vague warnings are useless and would have made little difference in the way they went about their daily routine.

Bud was beginning to discount the vague warnings he had received.

On the other hand, some question how valuable a vague or probabilistic warning would be.