31.   But federal investigators have warned about safety problems in general.

32.   But it was clear that many of the changes would be reliability problems long before they would be safety problems.

33.   But officials at the consumer agency say that they put the toys through a more wide-ranging test and can find no safety problems.

34.   But some in the auto industry fear there will be safety problems if drivers are distracted.

35.   But the drug agency is requiring the company to continue studies to see if there are any long-term safety problems.

36.   But the safety problems may be easier to figure out than a total solution.

37.   But the FDA, stung by several instances of widespread safety problems with drugs that it had approved, is becoming tougher.

38.   But ValuJet has had several safety problems over the last year.

39.   Cellphone providers generally promote hands-free accessories as a solution to any potential safety problems.

40.   China Airlines, which is based in Taipei, has had a history of safety problems.