Like many impoverished residents of downtown Johannesburg, Sihle Dube had rented a tiny room from someone who didn't actually own it, in a rundown building that was becoming a trash-strewn haven for drugs and crime. Dube scrambled into his trousers and tried to climb out of his first floor window, but he slipped on a satellite dish, fell and blacked out. More than 70 others did not make it out alive, one of Johannesburg's worst disasters in living memory.