21.   But a cautionary note was raised by the author of the study, Mitchell L. Moss, director of the Urban Research Center at NYU.

22.   But a downturn in Japan could spell trouble, or at least sound a cautionary note, for the international luxury crowd.

23.   But a downturn here could spell trouble, or at least sound a cautionary note, for the international luxury crowd.

24.   But as America goes toward even more deregulation in utilities, he offers this cautionary note.

25.   But both Clinton and Albright Thursday sounded cautionary notes about first securing an Israeli-Syrian deal.

26.   But a cautionary note exists that Belichick and offensive coordinator Charlie Weis both chose to ignore when this deal was made.

27.   But cautionary notes are coming from some senior Democrats.

28.   But Detlef Schrempf, one of many Sonic stars, had a cautionary note for fans back home.

29.   But before anyone tosses out the toaster oven to make room in the kitchen for a new computer, consider a few cautionary notes.

30.   But Earley at Fox injected a cautionary note, delicately phrased.