Saxo Central locking Help

[ph1l5]

Hi Guys need some help with my 97 R reg Saxo the central locking is working itself. Every 30 seconds it locks and unlocks itself 5 times all the time. Its really pissing me off. I have Disconected the battery which stops it. (In the hope that it was a glitch) after being left disconnected all night it still does it. Then I removed the Fuse F8 for central locking and that didn't stop it. and now the battery is flat. anyone got any ideas ?