happened 2 times to me!
happened on me s2 3 days after buying it, the catch kept sticking open (since realised it was due to a dodgy frayed cable)
windscreen, bonnet, vents, scuttle...
i pulled out of a go karting place drive, up to 60, then whoosh!!!! my mate behind said i only just missed the oncomeing traffic...!!!
also happened in my old 3i cab, but that was down to my stupidity!!!
i ALWAYS check my latch is not stuck open before i close it, even though i have got a new cable and lock!