This is not to sensationalize or scare anyone off the track, but it is important to understand unpredictable things do happen. So, as a lesson learned for all of us, please read the following post, I did ask Eric to write an article for us on this, and as soon as he finds the time he will do so and we'll post it in an appropriate forum as a reference
http://dorkiphus.net/porsche/showthread.php?t=25127: