Hi, I just ran into an almost exact match of this problem with my 07' 2.0 petrol Mk3. 47K, FFSH and serviced in Nov 11'. Did a 300 mile round trip at Xmas, left the car on drive for about 48 hours before heading off on next 1000 mile trip and it wouldn't start. It was trying to but just not firing up. It did start after 5th or 6th attempt and then puffing a lot of white smoke. Smoking stopped after 5 mins or so and the rest of the trip was fine. There have been a few times since when it has not fired up instantly (like usual) but nothing like this one off event. Dropped into a dealer to describe what had happened and they looked at me blankly. Said they would need to do a diagnostic but the only guy who could do it was off until after Xmas. Oh, and it would cost me 60 quid even if it turned up nothing on what the problem was/is. Was there any solution for you rhoderunner? Could those problems you describe Fankle also apply to the 2.0 petrol?