Drivers door central locking HELP!

Right chaps, i have a 05 fabia vrs & all doors apart from the drivers door will lock/unlock via the key fob but all the doors will lock/unlock inc drivers side wen key is used in door. I have tried using the lock/unlock buttons inside the car but same thing again, all doors apart from drivers side respond all doors do as they should when the silver pin is moved up & down aswell.

Any one have any ideas or had this problem before??