Picked up my car today. the paper work just said "Found turbo to be leaking, removed and replaced under warranty". So far so good but it is early days. Hopefully it is all sorted - i dread to think how much a new turbo and labour would have cost if it was out of warranty. I'm sure if your car is just out of warranty, then they will honour it as a gesture of good will. Definitely worth raising as soon as possible with the dealer.
Just out of interest, has anyone tried removing their filler cap with the engine running? I'd be interested to know if it is the same as mine.
Matt