My 2005 997 runs like a dream but over the past few weeks I've experience loss of power momentarily. I've read other posts about a similar experience when pulling away or with a cold engine. My experience can happen on a warm engine when driving. As an example, I'm driving along at say 40 then gently accelerate but nothing happens. I lift my foot then repress the accelerator and it works fine. On a recent 100miler this happened about 5 times. Only a minor inconvenience at the moment but clearly not right and worried it could be the symptoms of something more serious.