Quite frequently ill pull up at work or on the drive with the window down, pull the button up to have it wind all the way up, it goes up about half an inch and then just drops all the way back down again... or to really wind me up it'll go up again a little bit then drop by a little more then stop.... when i ask it to come up again it just drops straight back down. My old Leon used to do this on occasion.... seemed to be when it was raining, wasnt sure if anyone had any ideas on this though?