About 700 people pushed and shoved and organisers threatened to shut down a World Cup ticket centre in Johannesburg as fans crowded outside, only to discover later that FIFA's computer systems had crashed inside.
Two hours into Friday's final release, no one had been able to buy any of the 160,000 tickets still available for the world's biggest football tournament.
FNB, the bank which acts as a World Cup ticket distributor in South Africa, said FIFA's ticketing system crashed again on Friday morning due to a volume overload.
Chief organiser Danny Jordaan said he wanted to "sincerely apologise" to the fans, some of whom had been queuing for two days, for Friday's problems. People forced their way into the queues, according to fans, and some were pushed up against the doors of the ticket centre.
Meanwhile, in another incident, police said two hotel workers stole money from members of Colombia's football team, who were in South Africa for a friendly against the World Cup host.
A police spokesman said on Friday that the Colombian players' hotel rooms were cleaned while they were training on Tuesday, and when they returned they discovered cash was missing.
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