m40 pointer

Hi all,



I've had a m40 for 6 months.. today the pointer stopped working.

lights & buttons work fine.

firmware & config program is up to date...



it randomly stopped moving once then started working again.. few seconds later it died. it is the mouse as I've tried it on a different pc with same result.



I use a cmstorm mouse pad and I have tried to clean the sensor from the outside.



any ideas? thanks.