41.   Ms. Quinlan on Tuesday played down reports in trade publications that personality problems caused the departures.

42.   Mrs. Hathaway contended that no one knew the reason for the crash and that a mechanical problem might have caused it.

43.   NATO officials initially said engine problems may have caused the crash, but May said the exact cause is not yet known.

44.   Northeast has had large losses in recent years and had to suspend its dividend four years ago because of financial pressures caused by problems with its nuclear plants.

45.   On Election Day in November, electrical problems caused several computer crashes that delayed the final vote tally for hours.

46.   One was in a woman with diabetes and one seemed to be caused by problems with the umbilical cord.

47.   Pain caused by problems in the nervous system, called neuropathic pain, is often difficult to treat.

48.   Political problems have also caused delay.

49.   Pollution problems have caused Massachusetts to lag behind other New England states in developing aquaculture programs.

50.   Several problems can cause buffer underruns.