YaST & mouse selection at each boot

Today I pugged a keyboard and a mon in a box I was used to manage remotely and surprise I noticed that at every boot YaST came up to ask me what mouse was installed on the box. Of course the box has no mouse. Even if I select NONE the box keep on booting in YaST asking me over and over again what mouse I have. What should I set to definitively get rid of it... I tried to grep into /etc/init.d/ but I didn't find anything interesting... of course maybe I was looking for the wrong thing.