21.   For female fans like Ms. Cordeiro, that focus has led to an unexpected problem.

22.   For the most part, Van Susteren has relished her role in the trial, but the fame has brought with it some unexpected problems.

23.   Like any other program that massive, mistakes creep in and unexpected problems crop up.

24.   On a project of that size, contractors often run into unexpected problems and their costs go higher than anticipated.

25.   Over the next seven months, each week seemed to bring an unexpected technical problem.

26.   Opening the I.M. Pei wing two decades ago was a popular success, but it created an unexpected problem for the museum.

27.   PHOENIX - Driving all kinds of different vehicles can cause unexpected problems.

28.   Q. What unexpected problems did the Democrats encounter with the recount process?

29.   Secession opponents argue that a Valley city would be ill-prepared for unexpected financial problems because it has no credit history.

30.   Taiwan, a similarly intractable thorn between Washington and Beijing, is also prone to producing unexpected problems in U.S.-Chinese relations.