http://www.rennteam.com/showflat.php?Cat=0&Number=70666&an=0&page=0#70666

In an open public internet forum you have to be very suspicious, so I don't... yet. Or at least I don't believe it to be an issue or common ocurrence, but rather a rare failure that ahppens once in a million. Look here, here is another report of the same thing but with a 996Cab, yet I never heard this failure happening before on 996. (The above poster also posted the "same" thing here as well)
http://forums.rennlist.com/rennforums/showthread.php?t=24029