Great suggestions. I'll add more info to my site.
It is a Finnish assembled 2000 986S with about 92k miles on it, and I've pampered this car in every way.
When the problem occured, it was instantious, and since then I've learned about the huge number of defective castings from Rheinmetall (see link on my site) AG.
Moreover, it seems that there have been many Boxsters with this problem and no one has truly uncovered the evidence.....yet.
Cheers,
Glenn