Pioneer DDj-T1 (cuts during playback AND recording)

Hi 

Im using the DDJ T1, but it keeps on cutting as if the usb connection has been removed. Traktor keeps on playing however the controller does not respond unless i quit Traktor and relaunch it. it has happened a few times. the sound ofcourse cuts completely. i tried updating the software, changing the USB cables changing the power cable but it still does that.

Any suggestions???

THANKS