Michael Jackson had to postpone 5 of his upcoming London concert dates after catching vertigo from his sister. You know I'm just playing. The reason they gave for postponing the concerts is the "magnitude" of the show. They need more time to get it together, so the concerts will start 5 days later than planned. Fans holding tickets for the original opening night on July 8 will still have seats for the first concert - but those tickets for July 10, 12 and 14 will have to wait until March 2010.