Documentation please....Internet "I've heard" and "apparently there've been..." don't cut it on such a highly professional and intelligent forum as this one.
Have you, personally, experienced this?
I've seen broken extractors and a cracked frame from time to time, but the slide itself? Nope, unless some Bubba was using his overcharged reloads, in fact, I was next to a guy in a handgun class, in Winter, snow on the ground and I heard him shoot, it made a weird noise and I looked over and he was holding part of his Glock, the rest was on the ground in pieces, frame in chunks. Slide rock solid. Frame and internals blown all over. He cut his hand in a couple of places. He had overcharged his 40SW reloads.