(LONDON) -- For weeks, there's been a lot of anticipation about a giant clock in London's Trafalgar Square to mark the 500-day countdown to the 2012 Summer Olympics, which London will host.
Amid fireworks and speeches Monday by former British Olympic stars, the digital clock made by Olympic sponsor Omega finally began ticking down the seconds to the London Games, scheduled to being July 27, 2012.
Then on Tuesday, the clock stopped at 500 days, seven hours, six minutes and 56 seconds. Mechanics were called in and began working to repair the clock, which became operational several hours laters.
Omega issued a statement saying they would fly over a chief engineer all the way from Switzerland "to make a full diagnostic investigation into what created the problem."
In the meantime, a new snafu has arisen. People who try to buy tickets for the Olympics have discovered that they're being blocked from doing so if their Visa card has an expiration date anytime before the end of August 2011. Visa's the only card that organizers will accept to purchase tickets.
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