Haven't got any real major stories, and the Punto isn't likely to develop any soon - both it's MOTs went through without needing anything doing (and no, they didn't immeadiatly follow a service).
My previous car, a 93L Astra got through its MOT in late 2000. 3 weeks later there was pretty much complete brake failure when I was driving away from a Vauxhall garage near where I work (I had gone to ask about checking over the brakes!). They couldn't do it for a week, so I booked it into my local masterfit for the next day. Had to drive getting on for 30 miles with barely any brakes! Was fixed for £300, only for 3 months later to be written off. Got what I paid for the car plus the £300 back, and never looked back by getting the Punto!