repeated audio

Hi friends,

I'm logic 9 user and I'v been a very different problem. My audio track is repeating a sound. For example: Imagine that the sound is ...

First track 1, 2, 3, 4, 5... The following track: 6, 7, 8, 9, 10

Happens that when I ear all tracks the final sound is : 1, 2, 3, 4, 5, 6, 2, 3, 7, 8, 9, 5, 6, 10

Anyone know how could I solve that issue?

My system is:

Logic 9.1.8

OSX 10.1.2

Mac Pro (Late 2013)

Processor 3.5 GHz 6-Core Intel Xeon E5

Memory 16 GB 1866 MHz DDR3 ECC

Best regards

Joao Inacio