Half speed in timeline

My project is in half speed when played in timeline. When exported it´s ok.
TB 5.0 on Mac OSX 10.5.8. Have I done somthing wrong? Help!!

What is the frame rate of the project? Note that if you change the frame rate of your project after importing an audio file then you must re-import the audio. The reason for this is because the audio file is sampled at the frame rate of the project at the time of import.