Interesting Record problem For Mac

Hi im using new Cubase 6 for my Mac. I’ve MR816X. But there is a problem. There is a noise and dirty effect my audio records… Please help…

This is sample 1 : https://rapidshare.com/files/459153812/sample.mp3
sample 2 : https://rapidshare.com/files/459164866/sample2.mp3

That sounds like a clocking issue. Is there any other device in the FW chain? Are you slaving word clock to something else?