Had a quick search, cant see a prob with the same symptoms:
Went on hols for a week, came back and the car *finally* started after having the key turned for about 25 seconds.
This was following by quite a lot of white smoke out the exhaust.
Went for a drive- in all gears,at lowish rpms, it would just judder and chug instead of a smooth throttle response, although it seemed abit random. It would seriously struggle to accelerate at all when this was occuring.
When it warmed and hit a high rpm it seemed fine.
Any ideas what it is? It was absolutely fine when i left it.
Timing gone out?